Influence of recall on reliability of perception of the autokinetic illusion

An autokinetic test was given to 76 females subjects who were then randomly assigned to 1 of 4 groups of 19 subjects each. Two groups were retested after 1 and 6 wk., respectively. The other two groups were asked to recall their initial experience after 1 and 6 wk., respectively. Intertrial correlations of the measures were generally higher for the recall conditions than for the retest conditions. The results were discussed in terms of the potential influence that recall may have on the test-retest reliability of autokinesis.