Variable speed across dimensions of ability in the joint model for responses and response times

Peida ZHAN, Hong JIAO, Kaiwen MAN, Wen Chung WANG, Keren HE

Research output: Contribution to journalArticlespeer-review

Abstract

Working speed as a latent variable reflects a respondent’s efficiency to apply a specific skill, or a piece of knowledge to solve a problem. In this study, the common assumption of many response time models is relaxed in which respondents work with a constant speed across all test items. It is more likely that respondents work with different speed levels across items, in specific when these items measure different dimensions of ability in a multidimensional test. Multiple speed factors are used to model the speed process by allowing speed to vary across different domains of ability. A joint model for multidimensional abilities and multifactor speed is proposed. Real response time data are analyzed with an exploratory factor analysis as an example to uncover the complex structure of working speed. The feasibility of the proposed model is examined using simulation data. An empirical example with responses and response times is presented to illustrate the proposed model’s applicability and rationality. Copyright © 2021 Zhan, Jiao, Man, Wang and He.
Original languageEnglish
Article number469196
JournalFrontiers in Psychology
Volume12
Early online date29 Mar 2021
DOIs
Publication statusPublished - Mar 2021

Citation

Zhan, P., Jiao, H., Man, K., Wang, W.-C., & He, K. (2021). Variable speed across dimensions of ability in the joint model for responses and response times. Frontiers in Psychology, 12. Retrieved from https://doi.org/10.3389/fpsyg.2021.469196

Keywords

  • Response times
  • Joint model
  • Variable speed
  • Multidimensional item response theory
  • Hierarchical modeling framework

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