ERIC Number: EJ1281723
Record Type: Journal
Publication Date: 2021-Feb
Abstractor: As Provided
Seeing the Forest and the Trees: Comparison of Two IRTree Models to Investigate the Impact of Full versus Endpoint-Only Response Option Labeling
Spratto, Elisabeth M.; Leventhal, Brian C.; Bandalos, Deborah L.
Educational and Psychological Measurement, v81 n1 p39-60 Feb 2021
In this study, we examined the results and interpretations produced from two different IRTree models--one using paths consisting of only dichotomous decisions, and one using paths consisting of both dichotomous and polytomous decisions. We used data from two versions of an impulsivity measure. In the first version, all the response options had labels; in the second version, only the endpoints were labeled. Based on past research, we hypothesized that the endpoints would be selected more frequently in the endpoint-only labeled condition, and the midpoint response option would be selected more frequently in the fully labeled condition. Results from the two models (dichotomous and polytomous) were similar and indicated that our hypotheses were partially supported--specifically, there was no consistent pattern in terms of which condition saw a higher frequency of midpoint response selection. However, our hypotheses regarding extreme responding in the endpoint-only labeling condition were supported.
Descriptors: Comparative Analysis, Item Response Theory, Decision Making, Data Analysis, Conceptual Tempo, Measures (Individuals), Response Style (Tests), Likert Scales, Undergraduate Students, Item Analysis, Difficulty Level
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Authoring Institution: N/A