GRace: A MATLAB-Based Application for Fitting the Discrimination-Association Model. (28th October 2014)

• Record Type: Journal Article
• Authors: Stefanutti, Luca; Vianello, Michelangelo; Anselmi, Pasquale; Robusto, Egidio
• Is Part Of: Spanish journal of psychology. Volume 17(2014)
• Page Start: 249
• Page End: 261
• Publication Date: 2014-10-28
• Subjects: Psychology -- Periodicals; 150
• DOI: 10.1017/sjp.2014.67
• Languages: English
• ISSNs: 1138-7416

Abstract

<abstract abstract-type="normal"> <title>Abstract</title> <p>The Implicit Association Test (IAT) is a computerized two-choice discrimination task in which stimuli have to be categorized as belonging to target categories or attribute categories by pressing, as quickly and accurately as possible, one of two response keys. The discrimination association model has been recently proposed for the analysis of reaction time and accuracy of an individual respondent to the IAT. The model disentangles the influences of three qualitatively different components on the responses to the IAT: stimuli discrimination, automatic association, and termination criterion. The article presents <italic>General Race</italic> (GRace), a MATLAB-based application for fitting the discrimination association model to IAT data. GRace has been developed for Windows as a standalone application. It is user-friendly and does not require any programming experience. The use of GRace is illustrated on the data of a Coca Cola-Pepsi Cola IAT, and the results of the analysis are interpreted and discussed.</p> </abstract>