Search

While it is common for blind and visually impaired (BVI) users to use mobile devices to search for information, little research has explored the accessibility issues they encounter in their interactions with information retrieval systems, in particular digital libraries (DLs). This study represents one of the most comprehensive research projects, investigating accessibility issues, especially help-seeking situations BVI users face in their DL search processes. One hundred and twenty BVI users were recruited to search for information in six DLs on four types of mobile devices (iPhone, iPad, Android phone, and Android tablet), and multiple data collection methods were employed: questionnaires, think-aloud protocols, transaction logs, and interviews. This paper reports part of a large-scale study, including the categories of help-seeking situations BVI users face in their interactions with DLs, focusing on seven types of help-seeking situations related to visual interactions on mobile platforms: difficulty finding a toggle-based search feature, difficulty understanding a video feature, difficulty navigating items on paginated sections, difficulty distinguishing collection labels from thumbnails, difficulty recognizing the content of images, difficulty recognizing the content of graphs, and difficulty interacting with multilayered windows. Moreover, corresponding design recommendations are also proposed: placing meaningful labels for icon-based features in an easy-to-access location, offering intuitive and informative video descriptions for video players, providing structure information about a paginated section, separating collection/item titles from thumbnail descriptions, incorporating artificial intelligence image/graph recognition mechanisms, and limiting screen reader interactions to active windows. Additionally, the limitations of the study and future research are discussed. [ABSTRACT FROM AUTHOR]

Introduction: This study explores blind users' unique help-seeking situations in interacting with digital libraries. In particular, help-seeking situations were investigated at both the physical and cognitive levels. Method: Fifteen blind participants performed three search tasks, including known- item search, specific information search, and exploratory search, using the selected digital library. Pre-questionnaire, pre- and post-interviews, transaction logs and think-aloud protocols were used to collect data. Analysis: Open coding analysis was used to identify help-seeking situations the physical and cognitive levels. Results: The study identified seventeen help-seeking situations that blind users encountered while using digital libraries, including nine at the physical level and eight at the cognitive level. To be more specific, physical help-seeking situations were categorised into: 1) difficulty accessing information, 2) difficulty identifying current status and path, and 3) difficulty evaluating information efficiently. Cognitive help-seeking situations were classified into: 1) confusion about multiple programs and structures, 2) difficulty understanding information, 3) difficulty understanding or using digital library features, and 4) avoidance of specific formats or approaches. Conclusion: The identified help-seeking situations reveal a gap between current digital library design practices and special needs of blind users. Practical implications for the design of help features for more blind-friendly digital libraries are suggested based on the findings.

Introduction: Evaluation plays an important role in users' information searching and retrieving processes. While previous research mainly focuses on applied criteria, less research is on other dimensions of evaluation. This study explores the dimensions of evaluation activities including criteria applied, elements examined, activity engaged in and time spent in evaluating individual documents. Method: Conducting their own tasks, thirty-one participants with different demographic backgrounds, participated in the study. Multiple data collection methods were used: pre-questionnaires, interaction diaries, think-aloud protocols, transaction logs and post-questionnaires. Analysis: Types of evaluation criteria, elements, evaluation activities and their associated pre- and post-activities were analysed by open-coding. Descriptive analysis was applied to analyse the most and least time spent on individual documents with associated factors. Results: The findings of this study reveal that evaluation activities are complicated and dynamic. Eighteen types of evaluation criteria, seven types of evaluation elements, six types of evaluation activities and their associated pre- and post-activities were identified. In addition, factors affecting time spent in evaluating individual documents were analysed. Conclusions: The authors offer suggestions for information retrieval system design to support effective evaluation. (Contains 7 tables and 2 figures.)