Hole-entering response rate ordinal comparisons within groups and individuals under the prediction responding would increase across the interval.

<p>Intervals were divided into two equal duration bins, and these bins were ordinally compared. PCC values and accompanying <i>c</i>-values are displayed for individuals and pooled groups. No subjects responded at a higher frequency later in the interval (highest PCC value was 0.34; lowest <i>c</i>-value was 0.93).