Search (274 results, page 1 of 14)

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Abstract

The article reports a field study which examined the mental models of 80 undergraduates seeking information for either a history or psychology course essay when they were in an early, exploration stage of researching their essay. This group is presently at a disadvantage when using thesaurus-type schemes in indexes and online search engines because there is a disconnect between how domain novice users of IR systems represent a topic space and how this space is represented in the standard IR system thesaurus. The study attempted to (a) ascertain the coding language used by the 80 undergraduates in the study to mentally represent their topic and then (b) align the mental models with the hierarchical structure found in many thesauri. The intervention focused the undergraduates' thinking about their topic from a topic statement to a thesis statement. The undergraduates were asked to produce three mental model diagrams for their real-life course essay at the beginning, middle, and end of the interview, for a total of 240 mental model diagrams, from which we created a 12-category mental model classification scheme. Findings indicate that at the end of the intervention, (a) the percentage of vertical mental models increased from 24 to 35% of all mental models; but that (b) 3rd-year students had fewer vertical mental models than did 1st-year undergraduates in the study, which is counterintuitive. The results indicate that there is justification for pursuing our research based on the hypothesis that rotating a domain novice's mental model into a vertical position would make it easier for him or her to cognitively connect with the thesaurus's hierarchical representation of the topic area.

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Abstract

Most information systems share a common assumption: information seeking is discrete. Such an assumption neither reflects real-life information seeking processes nor conforms to the perspective of phenomenology, "life is a journey constituted by continuous acquisition of knowledge." Thus, this study develops and validates a theoretical model that explains successive search experience for essentially the same information problem. The proposed model is called Multiple Information Seeking Episodes (MISE), which consists of four dimensions: problematic situation, information problem, information seeking process, episodes. Eight modes of multiple information seeking episodes are identified and specified with properties of the four dimensions of MISE. The results partially validate MISE by finding that the original MISE model is highly accurate, but less sufficient in characterizing successive searches; all factors in the MISE model are empirically confirmed, but new factors are identified as weIl. The revised MISE model is shifted from the user-centered to the interaction-centered perspective, taking into account factors of searcher, system, search activity, search context, information attainment, and information use activities.

Date

10. 4.2005 14:52:22

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Content

Enthält die Beiträge: HECKER, T.E.: Patrons with disabilities or problem patrons: which model should librarians apply to people with mental illness?; LENN, K.: Library services to disabled students: outreach and education; DEWDNEY, P., R.M. HARRIS u. C. LOCKERBY: Meeting the information needs of battered women: responsibilities and roles for library and information science; BARSH, A.L. u. M. JACKSON: Information needs of special populations: serving people with mental illness using Computer Aided Instruction in a multimedia library for outpatients; KARP;, R.S. u. P.L. HORNE: Library services to traditionally underserved groups: an annotated bibliography

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Abstract

More complex contexts of information seeking require extensive thinking that involves an intellectual leap which carries the user `beyond the information given' (Bruner, 1973) to the construction of something `new'. According to Arnheim (1969) such thinking is directly affected by one's visual perception of the world and he argues that the most productive thinking results from this imagery. The application of visual or mental imagery to the relationships and structure in information seeking situations may be thought of as a constructive strategy for making meaning. This paper explores the use of mental imagery in the constructive process of information seeking. For the individual, the meaning of information is not inherent in the information itself but in his or her perception of it and how it fits into an image of the world or personal construct system (Boulding, 1961; Kelly, 1963). The use of imagery may facilitate a user's mental image of information and its relation to previously acquired knowledge and, thus, also facilitate new construction during the information seeking process. Mental imagery has been found to play an important role in creativity and problem solving. Shepard (1978) argues that some of the most creative thoughts and solutions which humans devise are those which are not confined to expression within linear verbal communication but rather spring from mental imagery that embraces a spatial approach to problem solving. Mental imagery is more concrete and visually constructive in nature than verbal methods of problem solving. This paper explores the role of imagery in the constructive tasks of problem solving and learning in the information seeking process.

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Abstract

This study focuses on the ways in which people define their source preferences in the context of seeking orienting information for nonwork purposes. The conceptual framework of the study combines ideas drawn from social phenomenology and information-seeking studies. The study utilizes Alfred Schutz's model describing the ways in which actors structure everyday knowledge into regions of decreasing relevance. It is assumed that this structuring based on the actor's interest at hand is also reflected in the ways in which an actor prefers information sources and channels. The concept of information source horizon is used to elicit articulations of source preferences. The empirical part of the study draws on interviews with 20 individuals active in environmental issues. Printed media (newspapers), the Internet, and broadcast media (radio, television) were preferred in seeking for orienting information. The major source preferences were content of information, and availability and accessibility. Usability of information sources, user characteristics such as media habits, and situational factors were mentioned less frequently as preference criteria.

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Content

Inhalt: The research study - Mental models - Stimulated recall methodology - Mental models emphasizing procedural and product goals - Mental models facilitating procedural and conceptual understanding - The role of stimulated recall in identifying the effects of mental models on teaching - Use of mental models to analyze and understand teachers' pedagogies

Footnote

The release of Stimulated Recall and Mental Models, therefore, could not have been timelier. It describes an empirical qualitative, case study research conducted by authors Lyn Henderson and Julie Tallman in which they studied the mental models of school librarians teaching K-12 students how to use electronic databases. In this research, funded by the Spencer Foundation, Henderson and Tallman studied and analyzed the mental models of their subjects, six American and four Australian school librarians, as they went about the task of teaching students one-on-one how to access and retrieve the information they needed for class assignments from electronic databases. Each librarian and student underwent a structured pre-lesson interview to ascertain their mental models (the sum of their prior learning and experiences) regarding the upcoming lesson. The lesson followed immediately and was carefully video- and audio-recorded, with the full knowledge of the librarian and her student. After the lessons, both student and librarian were interviewed with the intent of learning what each were thinking and feeling at specific points during the lesson, using the recordings as memory joggers. After the first librarian-pupil session, the student was freed but the librarian was re-studied tutoring a second learner. Again, the teacher and new student were preinterviewed, their lesson was recorded, and they were debriefed using the recordings for stimulated recall. It is important to note here the use of the recordings to create stimulated recall. Though considered a dubious practice by many respected researchers, Henderson and Tallman expend considerable time and effort in this book trying to establish the credibility of stimulated recall as a valid research tool. I find it interesting that the authors report that their realization of the value of stimulated recall was a collateral benefit of their study; they claim the original objective of their research was to analyze and compare the pre- and post-lesson mental models of the teacher-librarians (p.15). Apparently, this realization provided the inspiration for this book (pp. I & 208). Hence, its place of importance in the book's title.
This book is evidence that Henderson and Tallman were meticulous in following their established protocols and especially in their record keeping while conducting their research. There are, however, a few issues in the study's framework and methodology that are worth noting. First, although the research was conducted in two different countries - the United Slates and Australia - it is not clear from the writing if the librarian-pupil pairs of each country hailed from the same schools (making the population opportunistic) or if the sampling was indeed more randomly selected. Readers do know, though, that the librarians were free to select the students they tutored from within their respective schools. Thus, there appears to he no randomness. Second, "[t]he data collection tools and questionnaires were grounded in a [single] pilot study with a [single] teacher-Iibrarian" (p. 7). Neither the procedures used nor the data collected from the pilot study are presented to establish its reliability and validity. Therefore, readers are left with only limited confidence in the study's instrumentation. Further, it is obvious from the reading, and admitted by the researchers, that the recording equipment in open view of the study's subjects skewed the data. That is, one of the librarians tinder study confessed that were it not for the cameras, she would have completely deserted one of her lessons when encountering what she perceived to be overwhelming obstacles: a classic example of the Hawthorne Effect in research. Yet. despite these issues, researchers Henderson and Tallman make a respectable ease in this book for the validity of both mental models and stimulated recall. The mental models developed during the prelesson interviews seem remarkably accurate when observing the school librarians during the lessons. Additionally, while the librarians were able to adapt their lessons based on situations, they generally did so within their mental models of what constitutes good teachers and good teaching.
As for the value of reflecting on their teaching performance, the authors report the not-so-startling denouement that while it is easy to identify and define malpractice and to commit to changing performance errors, it is often difficult to actually implement those improvements. Essentially, what is first learned is best learned and what is most used is best used. In the end, however, the authors rightfully call for further study to be conducted by themselves and others. ETS's core ICT Literacy Assessment is not currently a mandatory college entrance examination. Neither is the advanced ICT Literacy Assessment a mandatory examination for promotion to upper level undergraduate studies. But it would be naïve not to expect some enterprising institutions of higher education to at least consider making them so in the very near future. Consequently, librarians of all stripes (public. academic, school, or others) would do well to read and study Stimulated Recall and Mental Models if they are truly committed to leading the charge on advancing information literacy in the Information Age. In this book are some valuable how-tos for instructing patrons on searching electronic databases. And some of those same principles could be applicable to other areas of information literacy instruction."

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Abstract

In university library reference service librarians often get ambiguous questions to which they try to give appropriate answers. Because of limitations on resources, time, mental capability for information processing, and other factors, the decision-making process involved in answering a reference question becomes bounded by the rationality of these constraints. Entering into this process is the ambiguous nature of good and acceptable answers according to students. This paper is based on Herbert Simon's ideas on bounded rationality and fuzzy sets as discussed by L.A. Zadeh

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Abstract

Examines and gives excerpts from documents which have had a significant impact on referral agency training procedures regarding the referral interview, focusing on 'Information and referral centers: interviewing and information giving', prepared by InterStudy, the Institute for Interdisciplinary Studies of the American Rehabilitation Foundation. The work of Gerald Caplan formed the foundation for the referral model generally used in the crisis intervention environment: a study is made of that model as implemented by Common Ground and by the Macomb County (Michigan) Crisis Center. Fundamental active listening skills are also examined as presented in the 'How to hotline' manual prepared by the Mental Health Association of Alexandria, VA

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Abstract

Examines some of the theories that have evolved to explain the mental processes required for the use of information systems. Categorizes research in this area into system oriented and user oriented studies and reviews this research. Describes a sample of methodologies used for examining users and their information seeking behaviour. Concludes with a discussion of the implications of these theories and methods for librarians and information specialists

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Date

22. 1.2000 19:29:08

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Abstract

Purpose - In a 31-month period, 1,184 questions addressed to the Internet Public Library's (IPL) reference service remained unanswered on the grounds that they were "out of scope". This paper aims to analyze the questions as artifacts of users' expectations to better chart the distinction between user and librarian views of reference service. Design/methodology/approach - Each question is examined to identify two user expectations, i.e. what kinds of information librarians could provide and what kinds of needs librarians could help meet. Emergent coding with a code-recode rate of 97 per cent identifies 23 types of expected librarian assistance and 28 characteristics of expected applications of that assistance. Findings - Users expect IPL librarians to provide personal advice, analysis, facts, procedures, instruction, technology guidance and evaluation. IPL librarians are expected to help users in making decisions, solving problems, completing processes and developing understanding. Research limitations/implications - Limitations include the use of a single coder and the use of single institution's data set. Mapping these user expectations suggests a need for librarians to consider further development of reference service in terms of its judgment, form, and involvement parameters. Practical implications - Reference service policies and training should be examined to enhance librarians' abilities to consider judgment, form, and involvement parameters primarily from the user's perspective. Originality/value - This paper analyzes that which is rarely seen, i.e. e-mail reference questions which are considered beyond the scope of service. Additionally, the IPL question pool provides a broader range of user mental models than would be found in any geographically bound institution.

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Abstract

Purpose - The purpose of this paper is to explore the applicability to information behaviour contexts of the notion of a "search image", a mental entity highlighted in a significant anthropological study appearing in the 1990s. Design/methodology/approach - The paper considers search images of information-seekers by exploring hypothetical situations and using source material pertaining to areas such as information systems, information retrieval, information-seeking and the nature of libraries. Findings - Two types of search image are postulated - those taking the form of a visual memory of a particular source and those providing a detailed specification of material required in a certain situation. Research limitations/implications - The definition of a search image presented here has not been evolved through research featuring specially-undertaken fieldwork. New studies, incorporating individual interviews or think aloud protocols, should be conducted in order to address a series of emergent questions relating to search images. Practical implications - When more has been learned about the characteristics of search images of successful information-seekers, it may be possible to build into programmes of information literacy prompts that will help individuals to clarify in their minds what they require before embarking on an information search. Originality/value - Intended for information practitioners and academics alike, the paper forms the first attempt to apply a particular concept originating outside the discipline, i.e. that of a search image, to information-seeking situations. Attention to search images has the potential to increase one's understanding of how individuals find information, as well as to add a further dimension to information literacy instruction.

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Abstract

Purpose - Using a variety of evidence this paper aims to develop the concept of "inferential information-seeking". The term itself is new and the type of phenomena it addresses has been the subject of limited attention. Design/methodology/approach - The author considers inferential information-seeking in the context of three distinct scenarios, each of which has come to the writer's attention through either the literature or his own direct experience. Findings - Exploration of the identified instances of inferential information-seeking reveals that the strategy is a circuitous one employed by individuals when faced with barriers that impede their use of more obvious methods of finding information. Substantial mental effort may be required on the user's part to exploit the information elicited in such a way as to satisfy the information need stimulating the action. Research limitations/implications - The notion of inferential information-seeking postulated here is based on a very small number of cases, none of which has come to light in research specially undertaken to investigate the phenomenon. Practical implications - Even though knowledge of inferential information-seeking is still in its infancy, it would appear appropriate to incorporate some provision for it in the teaching of information literacy. Originality/value - Intended for information practitioners and academics alike, the paper synthesizes a new concept through examination of actual information-seeking episodes with reference to a wide-ranging body of source material. An understanding of inferential information-seeking offers the potential to increase our comprehension of how individuals find information, as well as to add a further dimension to information literacy instruction.

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Abstract

Literature examining information judgments and Internet search behaviors notes a number of major research gaps, including how users actually make these judgments outside of experiments or researcher-defined tasks, and how search behavior is impacted by a user's judgment of online information. Using the medical setting, where doctors face real consequences in applying the information found, we examine how information judgments employed by doctors to mitigate risk impact their cognitive search. Diaries encompassing 444 real clinical information search incidents, combined with semistructured interviews across 35 doctors, were analyzed via thematic analysis. Results show that doctors, though aware of the need for information quality and cognitive authority, rarely make evaluative judgments. This is explained by navigational bias in information searches and via predictive judgments that favor known sites where doctors perceive levels of information quality and cognitive authority. Doctors' mental models of the Internet sites and Web experience relevant to the task type enable these predictive judgments. These results suggest a model connecting online cognitive search and information judgment literatures. Moreover, this implies a need to understand cognitive search through longitudinal- or learning-based views for repeated search tasks, and adaptations to medical practitioner training and tools for online search.

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Abstract

No prior research has been identified that investigates the causal factors for workplace exploratory search task performance. The impact of user, task, and environmental factors on user satisfaction and task performance was investigated through a mixed methods study with 26 experienced information professionals using enterprise search in an oil and gas enterprise. Some participants found 75% of high-value items, others found none, with an average of 27%. No association was found between self-reported search expertise and task performance, with a tendency for many participants to overestimate their search expertise. Successful searchers may have more accurate mental models of both search systems and the information space. Organizations may not have effective exploratory search task performance feedback loops, a lack of learning. This may be caused by management bias towards technology, not capability, a lack of systems thinking. Furthermore, organizations may not "know" they "don't know" their true level of search expertise, a lack of knowing. A metamodel is presented identifying the causal factors for workplace exploratory search task performance. Semistructured qualitative interviews with search staff from the defense, pharmaceutical, and aerospace sectors indicates the potential transferability of the finding that organizations may not know their search expertise levels.

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Date

4. 3.2006 16:29:22

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Date

22. 3.2008 13:29:47

Source

Bibliothek: Forschung und Praxis. 29(2005) H.1, S.16-18

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Source

Bibliotheek en Samenleving. 22(1994) no.2, S.26-29

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Date

17. 7.1998 22:10:42

Source

Internet reference services quarterly. 3(1998) no.1, S.29-36

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Date

23.10.1996 17:26:29

Source

Bibliothek: Forschung und Praxis. 22(1998) H.1, S.78-80