Prolonged response time concealed information test decreases probe-control differences but increases classification accuracy.

The Response Time Concealed Information Test (RT-CIT) can reveal that a person recognizes relevant item ( probe , e.g., murder weapon) among other irrelevant items controls ), based on slower responses to the compared controls. present paper assesses influence of test length (due practice, habituation, or fatigue) two key variables in RT-CIT: (a) probe-control differences and (b) classification accuracy, through meta-analysis (using 12 previous experiments), as well with new experiments. It is consistently demonstrated increased decreases but increases accuracies. main implication for real-life application using altogether at least around 600 trials optimal RT-CIT.