An official website of the United States government
Search systems are often used to support learning-oriented goals. This trend has given rise to the “searchas- learning” movement, which proposes that search systems should be designed to support learning. To this end, an important research question is: How does a searcher’s type of learning objective (LO) influence their trajectory (or pathway) toward that objective? We report on a lab study (N = 36) in which participants gathered information to meet a specific type of LO. To characterize LOs and pathways, we leveraged Anderson and Krathwohl’s (A&K’s) taxonomy [3]. A&K’s taxonomy situates LOs at the intersection of two orthogonal dimensions: (1) cognitive process (CP) (remember, understand, apply, analyze, evaluate, and create) and (2) knowledge type (factual, conceptual, procedural, and metacognitive knowledge). Participants completed learning-oriented search tasks that varied along three CPs (apply, evaluate, and create) and three knowledge types (factual, conceptual, and procedural knowledge). A pathway is defined as a sequence of learning instances (e.g., subgoals) that were also each classified into cells from A&K’s taxonomy. Our study used a think-aloud protocol, and pathways were generated through a qualitative analysis of participants’ thinkaloud comments and recorded screen activities. We investigate three research questions. First, in RQ1, we study the impact of the LO on pathway characteristics (e.g., pathway length). Second, in RQ2, we study the impact of the LO on the types of A&K cells traversed along the pathway. Third, in RQ3, we study common and uncommon transitions between A&K cells along pathways conditioned on the knowledge type of the objective. We discuss implications of our results for designing search systems to support learning.
more »
« less
Anderson and Krathwohl's Two-Dimensional Taxonomy Applied to Supporting and Predicting Learning During Search
There is a growing body of research in the Search as Learning community that recognizes the need for users to learn during search, but modern search systems have yet to adapt to support this need. Our research proposes three research goals toward addressing the support of user learning during search. Research goal 1 (RG1) introduces a more precise and reliable metric of assessing user learning. Anderson & Krathwohl’s 2-dimensional taxonomy is used as a framework to develop learning objectives and assessment questions to measure user learning during search. Additionally, Anderson & Krathwohl’s taxonomy is used as a coding scheme to outline the pathways users traverse along the way to a particular learning objective. Research goal 2 (RG2) investigates the prediction of learning objectives using behavioral measures. Finally, research goal 3 (RG3) proposes a search system that presents information relevant to the user based on their current learning sub-goal and scaffolds information based on the pathways they are likely to traverse given a particular learning objective.
more »
« less
- Award ID(s):
- 1718295
- PAR ID:
- 10189183
- Date Published:
- Journal Name:
- Proceedings of the 2020 Conference on Human Information Interaction and Retrieval
- Page Range / eLocation ID:
- 507 to 510
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
More Like this
-
-
In recent years, the “search as learning” community has argued that search systems should be designed to support learning. We report on a lab study in which we manipulated the learning objectives associated with search tasks assigned to participants. We manipulated learning objectives by leveraging Anderson and Krathwohl’s taxonomy of learning (A&K’s taxonomy) [2], which situates learning objectives at the intersection of two orthogonal dimensions: the cognitive process and the knowledge type dimension. Participants in our study completed tasks with learning objectives that varied across three cognitive processes (apply, evaluate, and create) and three knowledge types (factual, conceptual, and procedural knowledge). We focus on the effects of the task’s cognitive process and knowledge type on participants’ pre-/post-task perceptions and search behaviors. Our results found that the three knowledge types considered in our study had a greater effect than the three cognitive processes. Specifically, conceptual knowledge tasks were perceived to be more difficult and required more search activity. We discuss implications for designing search systems that support learning.more » « less
-
Search tasks play an important role in the study and development of interactive information retrieval (IIR) systems. Prior work has examined how search tasks vary along dimensions such as the task’s main activity, end goal, structure, and complexity. Recently, researchers have been exploring task complexity from the perspective of cognitive complexity—related to the types (and variety) of mental activities required by the task. Anderson & Krathwohl’s two-dimensional taxonomy of learning has been a commonly used framework for investigating tasks from the perspective of cognitive complexity [1]. A&K’s 2D taxonomy involves a cognitive process dimension and an orthogonal knowledge dimension. Prior IIR research has successfully leveraged the cognitive process dimension of this 2D taxonomy to develop search tasks and investigate their effects on searchers’ needs, perceptions, and behaviors. However, the knowledge dimension of the taxonomy has been largely ignored. In this conceptual paper, we argue that future IIR research should consider both dimensions of A&K’s taxonomy. Specifically, we discuss related work, present details on both dimensions of A&K’s taxonomy, and explain how to use the taxonomy to develop search tasks and learning assessment materials. Additionally, we discuss how considering both dimensions of A&K’s taxonomy has important implications for future IIR research.more » « less
-
Abstract Evaluation metrics such as precision, recall and normalized discounted cumulative gain have been widely applied inad hocretrieval experiments. They have facilitated the assessment of system performance in various topics over the past decade. However, the effectiveness of such metrics in capturing users’ in-situ search experience, especially in complex search tasks that trigger interactive search sessions, is limited. To address this challenge, it is necessary to adaptively adjust the evaluation strategies of search systems to better respond to users’ changing information needs and evaluation criteria. In this work, we adopt a taxonomy of search task states that a user goes through in different scenarios and moments of search sessions, and perform a meta-evaluation of existing metrics to better understand their effectiveness in measuring user satisfaction. We then built models for predicting task states behind queries based on in-session signals. Furthermore, we constructed and meta-evaluated new state-aware evaluation metrics. Our analysis and experimental evaluation are performed on two datasets collected from a field study and a laboratory study, respectively. Results demonstrate that the effectiveness of individual evaluation metrics varies across task states. Meanwhile, task states can be detected from in-session signals. Our new state-aware evaluation metrics could better reflect in-situ user satisfaction than an extensive list of the widely used measures we analyzed in this work in certain states. Findings of our research can inspire the design and meta-evaluation of user-centered adaptive evaluation metrics, and also shed light on the development of state-aware interactive search systems.more » « less
-
null (Ed.)In this paper, we propose that the theory of planned behavior (TPB) with the additional factors of awareness and context-based information can be used to positively influence users' cybersecurity behavior. A research model based on TPB is developed and validated using a user study. As a proof-of-concept, we developed a mobile cybersecurity news app that incorporates context-based information such as location, search history, and usage information of other mobile apps into its article recommendations and warning notifications to address user awareness better. Through a survey of 100 participants, the proposed research model was validated, and it was confirmed that context-based information positively influences users' awareness in cybersecurity.more » « less
- Free Publicly Accessible Full Text
-
Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1145/3343413.3377947
