Table 5.

Response criterion in the pre-test and final post-test sessions

Image format	Training status	Pre-test	Final post-test	Statistical results (ANOVA)
Intact (N = 60)	Untrained	−0.29	−0.17	No change in criterion. No main effects or interaction, ps > .24.
	Trained	−0.24	−0.13
Small cutout (N = 60)	Untrained	0.65	0.25	An initial bias toward “normal” was reduced (p < .002). No other effects (ps > .16)
	Trained	0.69	0.35
Large cutout (N = 12)	Untrained	0.30	0.28	No change in criterion. No main effects or interaction, ps > .25
	Trained	0.40	0.19
Background (N = 48)	Untrained	0.09	0.09	No change for untrained images. Response became more liberal for trained images (p < .04) Significant interaction p < .001
	Trained	0.16	−0.09

Positive values indicate a bias in reporting “normal”. Negative values indicate a bias in reporting “abnormal”. ANOVA analysis of variance