Summary statistics for the logit-transformed scores on independent administrations of the PNT and the short forms (n=25). Levene's test for homogeneity of variance indicates that the three forms did not produce significantly different variances in scores. Pairwise t-tests indicate that both short forms produced a significantly higher score on average than the PNT (t = 1.8 and 3.6; 1-tailed p < .04), but they did not produce significantly different scores from each other (t = 0.8; 2-tailed p = .43).