depmixS4 (version 0.2-1)

speed: Speed Accuracy Switching Data

Description

This data set is a bivariate series of reaction times and accuracy scores of a single subject switching between slow and accurate responding and fast guessing on a lexical decision task. The slow and accurate responding, and the fast guessing can be modelled using two states, with a switching regime between them. The dataset further contains a third variable called Pacc, representing the relative pay-off for accurate responding, which is on a scale of zero to one. The value of Pacc was varied during the experiment to induce the switching. This data set is a from a single subject from experiment 2 in Van der Maas et al, 2005.

Usage

data(speed)

source

Han L. J. Van der Maas, Conor V. Dolan and Peter C. M. Molenaar (2007), Phase Transitions in the Trade-Off between Speed and Accuracy in Choice Reaction Time Tasks. Manuscript in preparation.

Examples

data(speed)
## maybe str(speed) ; plot(speed) ...