Abstract
One method for detecting test collusion, or large-scale answer sharing, is the divergence framework (Belov, Journal of Educational Measurement 50: 141–163, 2013). It uses Kullback–Leibler divergence and a psychometric model to identify groups of test-takers with unusual person-fit distributions. A second phase examines individuals within anomalous groups. Another line of research considers collusion detection methods that depend on the identification of aberrant response times. These methods can be integrated for greater power, using joint statistical models for item response and response time. Here, we explore the value added when collusion detection is conducted under the divergence framework, using two joint models of responses and response times: the lognormal model within a hierarchical framework (van der Linden, Journal of Educational and Behavioral Statistics 31:181–204, 2006; van der Linden, Psychometrika 72:287–308, 2007), and a model extended from the diffusion family of models for choice reaction time (Ratcliff, Psychological Review 85:59–108, 1978; Ratcliff et al., Psychological Review 106:261–300, 1999).
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References
Belov, D. I. (2013). Detection of test collusion via Kullback–Leibler divergence. Journal of Educational Measurement, 50(2), 141–163.
Carroll, J. R. (1993). Human cognitive abilities: A survey of factor-analytic studies. Cambridge, UK: Cambridge University Press.
Finger, M., & Chuah, S. C. (2009). Response-time model estimation via confirmatory factor analysis. Paper presented at the Annual Meeting of the National Council on Measurement in Education, San Diego, CA.
Laming, D. R. J. (1968). Information theory of choice reaction time. New York: Wiley.
Link, S. W., & Heath, R. A. (1975). A sequential theory of psychological discrimination. Psychometrika, 40, 77–105.
Ratcliff, R. (1978). A theory of memory retrieval. Psychological Review, 85, 59–108.
Ratcliff, R., & McKoon, G. (2008). The diffusion decision model: Theory and data for two-choice decision tasks. Neural Computation, 20, 873–922.
Ratcliff, R., & Rouder, J. F. (1998). Modeling response times for two-choice decisions. Psychological Science, 9, 347–356.
Ratcliff, R., & Smith, P. L. (2004). A comparison of sequential sampling models for two-choice reaction time. Psychological Review, 111, 333–367.
Ratcliff, R., & Tuerlinckx, F. (2002). Estimating the parameters of the diffusion model: Approaches to dealing with contaminant reaction times and parameter variability. Psychonomic Bulletin and Review, 9, 438–481.
Ratcliff, R., Van Zandt, T., & McKoon, G. (1999). Connectionist and diffusion models of reaction time. Psychological Review, 106, 261–300.
Stone, M. (1960). Models for choice reaction time. Psychometrika, 25, 251–260.
Thissen-Roe, A., & Finger, M. S. (2014). Speed, speededness, and the price of high information. Paper presented at the Meeting of the Society for Industrial-Organizational Psychology, Honolulu, HI.
Tuerlinckx, F., & De Boeck, P. (2005). Two interpretations of the discrimination parameter. Psychometrika, 70, 629–650.
van der Linden, W. J. (2006). A lognormal model for response times on test items. Journal of Educational and Behavioral Statistics, 31, 181–204.
van der Linden, W. J. (2007). A hierarchical framework for modeling speed and accuracy on test items. Psychometrika, 72, 287–308.
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Thissen-Roe, A., Finger, M.S. (2015). Collusion Detection Using Joint Response Time Models. In: van der Ark, L., Bolt, D., Wang, WC., Douglas, J., Chow, SM. (eds) Quantitative Psychology Research. Springer Proceedings in Mathematics & Statistics, vol 140. Springer, Cham. https://doi.org/10.1007/978-3-319-19977-1_6
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DOI: https://doi.org/10.1007/978-3-319-19977-1_6
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