Information behavior
Information behavior is the currently preferred term in library and information science to describe the many ways in which human beings interact with information, encompassing active seeking, passive reception, use, and management of information across personal, professional, and social contexts.[1] It includes both individual cognitive and emotional processes as well as group dynamics in relation to information sources and channels.[2] The field originated in early 20th-century library studies on user needs and reading habits, evolving through post-World War II research on scientific communication and document use among professionals.[1] By the 1980s, it shifted toward person-centered approaches, incorporating qualitative methods to explore everyday information practices beyond formal systems like libraries.[2] Influential early works include Ranganathan's principles of reference service (1940) and the 1948 Royal Society conference on scientific information, which highlighted needs for efficient information dissemination.[1] Key models frame information behavior as dynamic and context-dependent processes.[2] Wilson's nested model (1999) integrates information seeking, searching, and use within problem-solving stages, from recognition to resolution.[2] Dervin's sense-making methodology (1983) emphasizes bridging gaps between situations and outcomes through information.[2] Other notable frameworks include Ellis's behavioral characteristics for scholarly searching (e.g., chaining references, browsing) and Kuhlthau's Information Search Process, which accounts for affective stages like uncertainty and relief.[2] Bates' berrypicking model (1989) depicts searching as iterative gathering of "berries" from multiple sources rather than a single query.[1] In the 21st century, research has expanded to address digital technologies, social media, and societal challenges, with 1,270 publications from 2016 to 2022 focusing on themes like misinformation, collaborative practices, and embodied interactions.[3] Recent studies as of 2025 have increasingly examined AI's role in human-centered information seeking, such as in health contexts.[4] The COVID-19 pandemic accelerated studies on health information avoidance and trust in online sources, while growing attention to diverse populations—such as migrants and those with disabilities—highlights inclusive behaviors.[3] Applications span health sciences, education, and everyday life, informing the design of information systems and policies to support effective human-information interactions.[1]Introduction
Definition and scope
Information behavior is defined as the totality of human behavior in relation to sources and channels of information, including both active and passive information seeking, and information use.[2] This conceptualization, articulated by Thomas D. Wilson, extends beyond deliberate actions to encompass everyday interactions such as face-to-face communication or passive reception through media like television advertisements.[2] It highlights the multifaceted ways individuals engage with information, recognizing that such behavior occurs continuously and often unconsciously in daily life. The scope of information behavior is broad, covering purposive seeking, serendipitous encountering, use, avoidance, and production of information in diverse contexts including work, leisure, and health. Purposive seeking involves intentional efforts to locate needed information, while serendipitous encountering refers to unplanned discoveries that may prove valuable. Use and production entail applying or creating information, whereas avoidance reflects deliberate choices to ignore or reject it, all shaped by personal and environmental influences. Distinct from information retrieval, which centers on system design and algorithmic efficiency, information behavior prioritizes user-focused processes and human-centered dynamics. This field maintains strong interdisciplinary connections to psychology, sociology, and communication studies, integrating insights on human cognition, social structures, and interaction patterns. Central to it are cognitive factors like decision-making, affective elements such as emotions, and situational variables including context and resources, which collectively influence how individuals navigate information landscapes.[5]Historical development
The roots of information behavior as a distinct field of study emerged from early 20th-century influences in communication theory and library science, with significant developments in the mid-20th century. Building directly on such models, Robert S. Taylor's 1962 analysis of question-negotiation introduced the idea of value-added processes, where librarians iteratively refine user queries through clarification and feedback to bridge gaps between vague needs and precise information retrieval.[6] These early contributions shifted focus from purely bibliographic systems to the human elements of information interaction, laying groundwork for user-centered research. During the 1970s and 1980s, information behavior coalesced as a subfield distinct from traditional library science, emphasizing empirical studies of users rather than collections. This era saw a pivotal advancement in T.D. Wilson's 1981 macro-model, which positioned information seeking within a broader ecosystem of needs, barriers, and contextual influences, serving as a comprehensive schema for subsequent empirical investigations.[7] Seminal theoretical works further solidified this trajectory, including Nicholas J. Belkin's 1980 Anomalous State of Knowledge (ASK) hypothesis, which posited that information needs arise from cognitive discrepancies or "anomalies" in a user's knowledge state, prompting interactive retrieval processes.[8] Complementing this, Brenda Dervin's 1983 sense-making methodology framed information use as a dynamic user-driven construction to navigate situational gaps, drawing from cognitivist perspectives to highlight interpretive processes in everyday contexts.[9] The 1990s brought institutional consolidation and international recognition to the field. The formation of the American Society for Information Science and Technology's (ASIS&T) Special Interest Group on Information Seeking and Use (SIG USE) in the late 1990s provided a dedicated forum for interdisciplinary exchange, fostering collaborations among researchers in library science, psychology, and computer science.[10] A key milestone was the launch of the biennial Information Seeking in Context (ISIC) conference series in 1996, which emphasized contextual and holistic dimensions of information practices, attracting global scholars and spurring advancements in qualitative and ethnographic methods.[11] From the 2000s onward, information behavior expanded through specialized publication outlets and global diffusion. The journal Information Research, established in 1995, became a central venue for peer-reviewed studies on user behaviors, publishing influential works that integrated theoretical and applied insights.[12] By 2022, Aurora González-Teruel's review highlighted the widespread adoption of everyday life information seeking (ELIS) models in Ibero-American scholarship, demonstrating the field's maturation and cross-cultural proliferation beyond Anglo-American origins.[13]Core Concepts
Information needs
Information needs represent the psychological and situational triggers that initiate information behavior, arising when individuals perceive a discrepancy between their current knowledge and what is required to address a problem or goal. These needs often stem from unresolved questions or ambiguities in understanding, prompting the desire to acquire new information. Seminal work by Robert S. Taylor in 1968 outlined a progression through four levels of information needs, illustrating how vague internal states evolve into actionable queries.[14] Taylor described the visceral need as a raw, unarticulated feeling of dissatisfaction or incompleteness, where the individual senses a gap but cannot yet express it linguistically. This progresses to the conscious need, a mental formulation of the ambiguity, often rambling and ill-defined. The formalized need refines this into a precise question or statement of doubt, while the compromised need adjusts the query to fit the constraints of available information systems, such as library catalogs or search engines. These levels highlight how unresolved needs generate uncertainty, as the initial visceral stage involves high ambiguity that diminishes through clarification and negotiation. Complementing this, Nicholas Belkin's anomalous state of knowledge (ASK) concept posits that information needs emerge from recognized anomalies or gaps in an individual's knowledge structure relative to a problem, creating a state of uncertainty that motivates seeking resolution.[15] Several factors shape the emergence and nature of information needs. At the personal level, cognitive styles—such as field dependence or need for cognition—influence how individuals perceive and articulate knowledge gaps, with those higher in need for cognition more likely to recognize complex needs proactively. Environmental contexts, particularly crises like natural disasters, intensify needs by amplifying urgency and altering priorities, as individuals seek immediate, survival-oriented information amid disrupted routines. Socially, cultural norms dictate what constitutes a legitimate need; for instance, collectivist cultures may prioritize community-relevant information over individual curiosities, embedding needs within shared values and expectations.[16][17][18] Measuring information needs typically involves qualitative and quantitative approaches to capture their articulation. Surveys quantify the frequency and types of needs across populations, often using scales to assess perceived gaps, while interviews—such as critical incident techniques or think-aloud protocols—elicit detailed descriptions of visceral and conscious stages, allowing researchers to probe underlying uncertainties. These methods, as reviewed in the literature, emphasize contextual probing to distinguish levels of need without assuming uniform expression. Information seeking behaviors, in turn, serve as observable responses to these identified needs.[19]Information seeking and encountering
Information seeking refers to the purposive activities individuals undertake to identify, locate, and acquire information in response to perceived needs, while information encountering involves passive or incidental acquisition of information without deliberate intent.[20] These processes often arise from gaps in knowledge, prompting behavioral responses that can be active or opportunistic. Seeking modes vary between formal and informal approaches. Formal seeking utilizes structured sources such as libraries, academic databases, and online repositories to conduct targeted queries.[21] In contrast, informal seeking draws on social networks, peers, mass media, and personal collections for more accessible, conversational exchanges.[21] Within these, directed search involves precise, goal-oriented efforts to retrieve specific information, whereas browsing entails semi-structured scanning of materials, allowing for broader exposure to potentially relevant content.[22] Information encountering occurs through serendipity, where individuals stumble upon useful or interesting information during routine activities or unrelated pursuits, such as discovering a relevant article while browsing a magazine or navigating online content.[23] This incidental discovery contrasts with active seeking by lacking prior intent, yet it can enrich knowledge unexpectedly; for instance, a researcher might encounter a key reference in a colleague's shared reading list.[23] Studies classify users by encounter frequency, from non-encounterers who rarely experience such events to super-encounterers who frequently benefit from them in environments like the internet or public spaces.[23] General models of information seeking describe a progression through stages, beginning with initiation where an information need is recognized, followed by selection of appropriate sources, exploration of available materials, and formulation of refined queries or understandings.[24] These stages reflect iterative refinement rather than linear steps, adapting to emerging insights during the process.[24] Several factors influence seeking strategies, including time constraints, which often lead to abbreviated or informal approaches when urgency limits thorough exploration.[25] Access to resources shapes source preferences, with limited availability prompting reliance on familiar or proximal options like personal networks over distant databases.[26] Technology further modulates behaviors; early digital tools facilitated directed web searches but also introduced browsing via hyperlinks, altering patterns from print-based methods.[27] Empirical studies prior to 2010 highlighted web searching patterns, revealing that users typically issued short queries averaging 2-3 terms and viewed few results before reformulating or abandoning searches.[28] For example, analyses of search engine logs from the late 1990s to mid-2000s showed sessions lasting under five minutes, with frequent shifts between informational and navigational intents, underscoring the dynamic and often inefficient nature of online seeking.[28] These findings established baselines for understanding how digital interfaces influenced everyday information pursuit.[28]Information use and sharing
Information use refers to the processes by which individuals integrate, apply, and transform acquired information following the seeking or encountering phase, which serves as the precursor to these activities. This integration occurs through distinct phases: assimilation, where information is internalized and incorporated into existing cognitive structures; application, involving its practical deployment in decision-making or task execution; and transformation, whereby the information is synthesized with prior knowledge to generate novel insights or solutions. These phases are central to how individuals derive value from information, as outlined in foundational models of information behavior. Sharing behaviors extend information use by disseminating it to others, encompassing interpersonal exchanges such as casual conversations among colleagues, mediated sharing via digital platforms like social networks, and collaborative efforts in group projects where information is co-created and distributed. Interpersonal sharing often relies on trusted relationships to convey context-specific knowledge, while mediated forms leverage tools for broader reach, and collaborative sharing emphasizes joint interpretation and refinement. These behaviors facilitate collective knowledge building but vary by context, such as professional teams or online communities.[29][30] Several factors influence effective information use and sharing, including relevance assessment, where users evaluate how well the information aligns with their needs; credibility evaluation, which scrutinizes the source's trustworthiness and expertise; and retention mechanisms, such as note-taking, digital archiving, or mnemonic strategies that aid long-term recall. Relevance is often judged intuitively against task goals, credibility through cues like author credentials or peer validation, and retention via active rehearsal or organizational tools to prevent decay. These factors ensure that only pertinent, reliable information is retained and shared, enhancing utility.[31][32] Outcomes of information use and sharing include behavioral changes, such as adopting new practices based on applied insights; improved problem-solving, where transformed information resolves uncertainties; and knowledge building, contributing to personal or communal expertise growth. For instance, in professional settings, shared information can lead to innovative solutions, while individual use fosters adaptive behaviors. User satisfaction research post-use has highlighted how effective assimilation correlates with perceived task success and repeat engagement.[33]Barriers and information poverty
Barriers to effective information access and utilization in information behavior encompass a variety of obstacles that prevent individuals from fulfilling their information needs, often perpetuating cycles of disadvantage. These can be broadly classified into physical, cognitive, affective, and economic categories. Physical barriers include limited geographical proximity to libraries or information centers, inadequate infrastructure, or restricted availability of resources in rural or underserved areas.[34] Cognitive barriers arise from deficiencies in information literacy skills, such as the inability to search, evaluate, or comprehend complex materials, particularly among those with low educational attainment.[35] Affective barriers involve emotional hurdles like information-seeking anxiety, fear of judgment, or frustration with technology, which can deter engagement altogether.[36] Economic barriers stem from the direct costs of information access, including fees for databases, devices, or internet services, disproportionately affecting low-income populations.[34] A key consequence of these barriers is information poverty, conceptualized by Elfreda Chatman in 1996 as a condition where individuals in marginalized "small worlds" face restricted information flow due to social and cultural constraints, including layers of secrecy (withholding information to protect privacy), relevance (perceived irrelevance of external sources), and situational relevance (context-specific barriers to sharing). This framework highlights how everyday social norms in impoverished communities limit proactive information seeking, resulting in knowledge gaps that hinder personal and communal advancement.[37] The digital divide intensifies information poverty by amplifying gaps in technology access and digital skills. Pre-2020 research showed stark disparities in internet and computer ownership across socioeconomic lines, and as of 2024, these gaps persist globally, with internet penetration at approximately 67%, but only 50% in rural areas compared to 81% in urban areas, excluding many from online educational, health, and economic resources essential for modern information behavior.[38] These divides not only restrict physical and economic access but also compound cognitive and affective barriers through unfamiliarity with digital interfaces. Key studies from the 1990s, such as those by Charles R. McClure and Peter Hernon, illuminated public access barriers to government information, revealing how policy ambiguities, fragmented distribution systems, and insufficient library funding created systemic obstacles for citizens seeking official data.[39] Their analysis emphasized the need for coordinated federal strategies to enhance equitable dissemination, underscoring economic and physical impediments in public institutions. To counteract these challenges, interventions like information literacy programs equip individuals with skills to navigate barriers, fostering confidence and competence in information handling, as evidenced by community-based initiatives in urban libraries.[40] Policy efforts, including subsidies for broadband expansion and free public access points, target economic and physical divides to broaden reach, with evaluations showing improved participation rates among underserved groups. Such measures help ensure that information needs are met, reducing the isolating effects of poverty.Metatheoretical Approaches
Cognitivist perspective
The cognitivist perspective in information behavior posits that human interactions with information are primarily driven by internal mental processes, including perception, cognition, and knowledge organization, rather than external stimuli alone.[41] This approach views information seeking and use as rational, problem-solving activities mediated by cognitive structures such as schemas and mental models, which individuals employ to interpret and integrate new information into existing knowledge frameworks.[42] Drawing from cognitive psychology, it emphasizes how these structures—originally conceptualized in Jean Piaget's theory of cognitive development as adaptive mental categories—facilitate assimilation and accommodation of information to resolve cognitive gaps or anomalies.[43] Core assumptions include the centrality of meaning-making, where information behavior emerges from the interplay between personal cognitive states and environmental cues, enabling goal-oriented decision-making.[41] Key proponents of this perspective include Marc De Mey, who in 1982 introduced the cognitive paradigm to information science, applying computer models of human perception to analyze scientific knowledge production and user interactions with information systems. T.D. Wilson further advanced the approach in the 1980s by integrating concepts like Alfred Schutz's "systems of relevance" and Kenneth Boulding's "image" as typifications of cognitive frameworks guiding information needs and seeking.[41] These ideas built on Piaget's influence, adapting developmental schemas to adult information processing in professional contexts, such as scientific research.[44] The perspective gained prominence through projects like INISS (1977), which examined how cognitive "world views" shape information use in organizational settings.[41] Strengths of the cognitivist perspective lie in its ability to explain goal-directed information seeking by modeling internal processes like problem formulation and relevance judgment, providing a foundation for user-centered design in information systems.[44] For instance, it elucidates how cognitive load— the mental effort required to process search results—influences user satisfaction and retrieval effectiveness in interactive systems.[45] However, limitations include its relative neglect of social and contextual influences on behavior, focusing predominantly on individual cognition and often overemphasizing scientific or professional domains at the expense of everyday or diverse user experiences.[42] Applications of this perspective are evident in information retrieval (IR) system design, particularly in the 1980s, when it dominated efforts to create user models that account for cognitive states, such as in Nicholas Belkin's early work on query reformulation based on mental representations.[44] Modern extensions include search engine algorithms that mitigate cognitive load through personalized interfaces, like query suggestion tools that align with users' mental models to reduce decision-making effort.[46] Wilson's macro-models of information behavior, influenced by cognitivism, exemplify this by framing seeking as a cognitive response to perceived needs, though they incorporate broader elements.[41] The perspective evolved from the mid-20th-century cognitive revolution in psychology, peaking in IR during the 1980s with paradigm shifts toward interactive, user-adaptive technologies.[44]Constructivist perspective
The constructivist perspective in information behavior posits that individuals actively construct their own understanding of information through personal experiences and cognitive processes, rather than passively receiving objective knowledge. This metatheory emphasizes the subjective nature of knowledge, where meaning emerges from the interaction between the individual's prior knowledge and new information encounters. Influenced by radical constructivism, as articulated by Ernst von Glasersfeld, this view holds that knowledge is not a direct representation of an external reality but a viable construction that helps individuals navigate their environment effectively. Von Glasersfeld's framework underscores that cognitive structures are built proactively by the knower, shaping how information is interpreted and integrated into personal schemas.[47] In terms of behavior, the constructivist approach frames information seeking as a process aimed at resolving personal uncertainties arising from gaps in one's existing knowledge structures. Individuals engage in seeking to construct meaning that aligns with their unique situational contexts, often navigating ambiguity through iterative sense-making. Affective dimensions play a central role, as emotions such as anxiety or confidence influence how information is processed and incorporated into personal interpretations. For instance, uncertainty can trigger discomfort in early stages of seeking, motivating deeper engagement to build coherence.[48] A key figure in applying constructivism to information behavior is Carol Kuhlthau, whose uncertainty principle highlights how information seeking begins with inherent ambiguity and evolves through constructive stages involving cognitive and emotional shifts. This principle conceptually links to her Information Search Process model, which adopts a constructivist lens to depict users building personal understandings during tasks like research.[49] The strengths of the constructivist perspective lie in its ability to account for emotional responses and individual variability in information interpretation, providing a nuanced view of how users transform raw data into meaningful knowledge. It excels in explaining personalized trajectories in seeking and use, particularly in dynamic environments. However, limitations include its tendency to underplay external social and cultural influences on construction, focusing predominantly on intra-individual processes and potentially overlooking collaborative dynamics. Applications of this perspective are evident in personalized learning environments, where systems adapt to users' constructed meanings to support tailored information literacy and exploratory seeking. Such approaches foster environments that accommodate subjective uncertainties, enhancing user agency in knowledge building.Constructionist perspective
The constructionist perspective in information behavior posits that knowledge and reality are socially constructed through ongoing interactions, discourses, and shared practices within communities, rather than existing as objective entities independent of social context. Drawing from foundational sociological theory, this view emphasizes that individuals externalize their understandings into social structures, which are then objectivated and internalized by others, shaping how information is perceived and utilized. In the realm of information behavior, information itself emerges as a negotiated product of these communal processes, where meanings are co-created through language, conversation, and cultural norms rather than isolated individual cognition. This approach highlights the role of discourse in organizing and legitimizing information practices, as articulated by key theorists who argue that "knowledge is social in origin; the individual lives in a world that is physically, socially and subjectively constructed."[50] Central to this perspective are the implications for information seeking and use, which are embedded in social networks and influenced by cultural dynamics. Individuals seek information primarily through interpersonal exchanges and community affiliations, where needs are not innate but shaped by collective norms and shared interpretations. For instance, professional groups negotiate information relevance within their social milieus, leading to behaviors that prioritize relational and contextual cues over universal criteria. This contrasts with more individualistic paradigms by underscoring how cultural and communal factors mold information needs, making seeking a socially contingent activity that reinforces group identities and practices. Seminal work in this area integrates social constructionism to explain how information behaviors sustain communal realities, such as through habitualized routines in everyday interactions.[50] Key applications of the constructionist perspective appear in ethnographic studies of professional communities, where researchers observe how information is enacted in situated practices. For example, examinations of firefighters reveal how embodied and social interactions construct information landscapes, enabling novices to learn through collective storytelling and shared routines rather than formal texts alone.[51] Such studies demonstrate the perspective's utility in uncovering how professional epistemologies are built collaboratively, informing designs for workplace information systems that align with communal discourses. The approach aligns briefly with theories like small worlds, which describe information practices as embedded in localized social spheres. The constructionist perspective excels in explaining contextual variations in information behavior, revealing how diverse social settings produce distinct practices and meanings, thereby enriching understandings of cultural diversity in information use. However, it has limitations in addressing individual cognitive processes, often prioritizing collective dynamics at the expense of personal interpretive mechanisms. This view has advanced through integration with discourse analysis to examine how power-laden conversations shape information organization and access in institutional contexts, influencing qualitative methodologies in the field.[51]Key Theories
Wilson's models of information behavior
T.D. Wilson developed a series of models to explain information behavior, evolving from broad frameworks to more contextual analyses, emphasizing the user's role in addressing information needs through seeking and use. His work draws foundational influences from the cognitivist perspective, focusing on cognitive processes in information handling. These models integrate psychological, social, and environmental factors to provide a user-centered understanding of how individuals interact with information systems. Wilson's 1981 macro-model frames information seeking as a response to stress or uncertainty, rooted in a stress/coping paradigm where information needs arise as secondary motivators rather than primary drives. In this model, information-seeking behavior is activated when individuals recognize a gap in knowledge, influenced by intervening variables including psychological factors such as the perceived importance of need satisfaction, penalties for acting without information, personal beliefs, and affective barriers like fear of revealing ignorance; demographic elements like work roles and organizational levels; and environmental aspects encompassing economic conditions, political systems, and physical settings that affect information availability. The model highlights passive attention to information encountered serendipitously and active search strategies, positioning information behavior within a broader systems theory context that considers interpersonal and mass media sources as channels for coping. This approach was informed by empirical fieldwork from the INISS Project, establishing a comprehensive macro-level view of gross information-seeking patterns. Building on this, Wilson's 1999 nested model refines the framework by placing information need at the core, encircled by layers of information seeking, use, and activating mechanisms, all embedded within contextual influences. Key behaviors include passive attention, where individuals absorb information without deliberate effort; active search, involving purposeful querying of sources; and information sharing, which extends beyond personal use to social dissemination. Intervening variables from the 1981 model persist, but the structure unifies diverse aspects of information behavior into a cohesive, user-centered system influenced by multidisciplinary inputs from psychology and management science, promoting a holistic rather than fragmented analysis. This model addresses limitations in prior work by incorporating cognitive and environmental contexts more explicitly, though it has been critiqued for overemphasizing rational choice processes and treating information processing as a "black box" without sufficient detail on internal mechanisms. In response to such criticisms, Wilson introduced a 2006 micro-model that applies activity theory to examine finer-grained, context-specific information behaviors, updating earlier frameworks for targeted applications. Drawing on activity theory components—such as motivation, goals, activities, tools (including artifacts and abstract constructs), objects, outcomes, rules, community, and division of labor—the model differentiates motive-driven activities, goal-directed actions, and condition-dependent operations, emphasizing socio-cultural-historical contexts and inherent contradictions within systems. Applied to domains like emergency services and social work, it highlights organizational dynamics and the non-predictive, conceptual nature of information seeking in real-world scenarios, enhancing the macro-models' applicability without assuming linear rationality. Overall, Wilson's contributions lie in fostering a unified, systems-oriented approach that prioritizes user agency, significantly influencing subsequent research in information behavior by bridging theoretical and practical dimensions.Sensemaking theory
Sensemaking theory, originally developed by Karl E. Weick, posits that individuals and groups create meaning from ambiguous or equivocal information environments through ongoing interpretive processes.[52] In the context of information behavior, it explains how people actively construct understanding to navigate uncertainty, often triggered by gaps in information needs arising from situational ambiguities.[52] Weick's framework emphasizes that sensemaking is not a passive reception of information but an active enactment of reality, where individuals draw on personal and social resources to impose order on chaotic inputs.[53] The core process of sensemaking is characterized by seven interconnected properties that guide how environments are enacted and interpreted.[52] These include: (1) grounded in identity construction, where sensemaking begins with an individual's sense of self, shaping what cues are noticed and how events are framed; (2) retrospective, as meaning is derived by looking backward at past experiences to explain the present; (3) enactive of sensible environments, wherein actions help create the very situations being interpreted; (4) social, involving interactions with others to co-construct shared understandings; (5) ongoing, as a continuous cycle rather than a discrete event; (6) focused on extracted cues, relying on salient details from complex data to build coherence; and (7) driven by plausibility, prioritizing workable explanations over absolute accuracy.[53] These properties highlight sensemaking as a dynamic mechanism for reducing equivocality in information-rich settings.[52] In information behavior, sensemaking has been adapted through Brenda Dervin's 1983 methodology, which focuses on "micro-moment" sense-making—brief, individual episodes where people bridge gaps between their current situation and desired outcomes.[9] Dervin's approach conceptualizes these bridges as spanning discontinuities in time and space, where information serves as a tool to connect fragmented experiences and resolve uncertainties in everyday decision-making.[9] This user-centered perspective shifts emphasis from static information systems to the fluid, subjective ways individuals generate meaning from encounters with data.[9] For example, in crisis information seeking, such as during natural disasters, people engage in sensemaking by noticing ambiguous cues from alerts, interpreting them through personal and social resources, and taking actions to test understandings, such as evacuation. Key studies in the 1990s extended sensemaking to specific domains of information behavior. In health contexts, Dervin and colleagues applied it to examine how pregnant women with substance dependencies used information to make sense of their risks and recovery options, revealing how personal narratives bridged emotional and factual gaps.[1] In organizational settings, Weick's framework was adapted to study how teams in high-reliability industries, like aviation, sensemake during routine anomalies to prevent errors, emphasizing retrospective cue extraction for proactive information sharing.[54] Sensemaking theory's strengths lie in its ability to address uncertainty and equivocality inherent in information behavior, providing a robust lens for understanding adaptive processes in dynamic environments like decision-making with incomplete data.[55] However, its abstract, interpretive nature poses limitations for empirical testing, as it often relies on qualitative retrospectives that are challenging to quantify or generalize across diverse user contexts.[55]Anomalous state of knowledge (ASK)
The Anomalous State of Knowledge (ASK) hypothesis, formulated by Nicholas J. Belkin in 1980, describes an information need as emerging from a recognized gap between an individual's existing knowledge structure and their mental representation of a problem they seek to resolve. This anomaly arises when the user's knowledge is inadequate to fully conceptualize, articulate, or address the issue, prompting information-seeking behavior to restore cognitive equilibrium. Belkin argued that traditional information retrieval systems, reliant on precise query matching, fail to accommodate this inherent vagueness, as users often cannot specify their needs explicitly due to the anomaly.[56] The causes of an ASK are rooted in specific cognitive deficiencies, including incomplete conceptualization of the problem domain, limited vocabulary for expressing the anomaly, or misunderstandings of the situational context surrounding the issue. For instance, a user investigating a complex medical symptom might lack the conceptual framework to link symptoms to potential diagnoses, or possess insufficient terminology to query databases effectively. These factors create a non-specifiable information need, where the user recognizes the knowledge deficit but struggles to operationalize it.[56][57] The implications of the ASK hypothesis extend to the design of information systems, highlighting the need for interactive, dialogic interfaces that support iterative refinement of queries rather than one-shot searches. Such systems enable users to explore and resolve anomalies through feedback loops, reducing the cognitive burden of initial query formulation and improving retrieval relevance. This approach underscores the importance of human-centered design in information retrieval, where system interactivity helps bridge the gap between anomalous knowledge and problem resolution.[56][57] Subsequent developments in the 1990s extended the ASK hypothesis to hypertext navigation, integrating cognitive task analysis to model user interactions in linked document environments. Belkin and colleagues proposed that hypertext structures could facilitate anomaly resolution by allowing users to traverse conceptual networks, aligning with distributed representations of knowledge gaps in intelligent interfaces.[58][59] Empirical support for the ASK hypothesis comes from design studies and user experiments demonstrating widespread query formulation difficulties and frustration in database searches. In a 1982 British Library-funded study involving 35 participants, only two exhibited needs suited to traditional best-match retrieval; the majority displayed ASK characteristics, leading to iterative interactions and expressed dissatisfaction with rigid systems. Further evidence from 1993 experiments on multiple query representations showed that users with anomalous knowledge benefited from varied query options, reducing frustration and enhancing retrieval performance in simulated database environments.[57][60]Small worlds and life in the round
Elfreda Chatman's concept of small worlds refers to self-contained social groups where members share mutual opinions, concerns, and activities shaped by the normative influences of the group as a whole, often limiting access to external information sources. Introduced in her 1999 work, this framework explains how individuals in such insular networks prioritize internal information flows to maintain group cohesion, thereby restricting broader information-seeking behaviors. These small worlds are particularly prevalent among marginalized populations, where social norms act as boundaries that discourage venturing outside the group for knowledge.[37] Building on this, Chatman's 2000 theory of life in the round describes the everyday dynamics within these small worlds, emphasizing the insider-outsider distinctions that govern information access in marginalized communities. In life in the round, individuals conduct their personal and social existences within the confines of their small world, shaped by a shared worldview that accepts specific norms and rejects external intrusions. This theory highlights how marginalized groups, such as those facing social exclusion, sustain their routines through internal networks, viewing outside information as irrelevant or threatening to group stability. Central to both concepts are specific behaviors that serve as barriers to information flow: risk-taking, secrecy, and situational relevance. Risk-taking involves the potential peril of seeking or sharing information beyond the small world's boundaries, which could disrupt social harmony or expose vulnerabilities. Secrecy manifests as the deliberate withholding of personal or group information to protect insiders from outsiders, reinforcing insularity. Situational relevance further limits engagement by deeming external information pertinent only if it aligns with the immediate, normative context of the small world. These behaviors collectively perpetuate a cycle where information remains confined, exemplifying broader barriers to access as discussed in information poverty contexts.[37] Chatman's theories were applied through ethnographic studies of specific populations, including women in prison and low-income elderly individuals. In her research on female prisoners, she observed how the prison environment formed a small world where inmates relied on internal gossip and shared experiences, avoiding official or external sources due to secrecy and risk concerns. Similarly, studies of low-income elderly revealed insular networks in housing projects, where situational relevance filtered out health or community information from outside agencies, prioritizing familiar, group-validated knowledge.[37] Overall, these frameworks contribute significantly to understanding social exclusion in information poverty by illustrating how normative pressures in small worlds hinder proactive information seeking, thus deepening disparities in access for vulnerable groups. Chatman's work underscores the socio-cultural dimensions of information behavior, emphasizing that exclusion is not merely economic but rooted in communal dynamics that prioritize conformity over exploration.Navigators and explorers framework
David Ellis's framework provides a description of information-seeking behaviors observed among professionals, particularly in academic and research environments. Introduced in his 1989 model, it identifies core behaviors that characterize how individuals interact with information sources during professional tasks. These behaviors include starting (identifying initial sources), chaining (following citations or references from one document to related ones), browsing (scanning materials like indexes or tables of contents), differentiating (using differences between sources), monitoring (tracking ongoing developments through journals or colleagues), extracting (pulling specific details from identified sources), verifying (checking the accuracy of information), and ending (concluding the search process).[61] The framework highlights variability in how professionals adapt these behaviors to their contexts, influenced by factors such as task complexity and domain expertise; for instance, experts may emphasize chaining and extracting for targeted queries, while those facing ambiguous tasks might rely more on browsing and monitoring.[62] The model's empirical foundation stems from qualitative studies, including Ellis's 1993 analysis of physicists, chemists, and social scientists, which refined the original behaviors, and a 1997 extension examining engineers and research scientists in industrial settings, confirming the patterns across disciplines.[63] Despite its influence, the framework has limitations, primarily its portrayal of behaviors as sequential and linear, which overlooks the iterative and non-linear nature of real-world information seeking; subsequent extensions, such as those incorporating feedback loops, address this by modeling more dynamic interactions.[64]Prominent Models
Information search process (ISP)
The Information Search Process (ISP) model, developed by Carol Kuhlthau, describes the user's holistic experience during information seeking as a constructive process that integrates cognitive, affective, and physical dimensions across six sequential stages.[24] This model emerged from empirical research emphasizing the user's perspective in academic and library settings, highlighting how individuals construct meaning from information rather than simply retrieving it.[65] Aligned with the constructivist perspective, the ISP views information seeking as an interpretive activity shaped by personal context and emotions.[49] The six stages, first outlined in 1991, progress from task initiation to completion:- Initiation: The user recognizes a need for information, often experiencing uncertainty and apprehension about the task ahead.[65]
- Selection: The user chooses a broad topic or approach, typically with a sense of optimism.[65]
- Exploration: General information is gathered, leading to confusion, frustration, and doubt as ambiguity increases.[65]
- Formulation: The user begins to form a focused perspective, gaining clarity and a sense of direction.[65]
- Collection: Relevant information is systematically gathered, with increased confidence in the emerging focus.[65]
- Presentation: The process concludes with the synthesis and sharing of findings, often accompanied by relief and satisfaction.[65]