Table 3. Results of Hierarchical Regression Analysis Predicting Decision Confidence.

	Decision Confidence
Independent variables	β	ΔR2, ΔF, df, p
Step 1		.23, 13.13, 3, .001
Choice condition	−.20*
Treatment choice	−.40**
Age group	.14
Step 2		.04, 3.65, 2, .03
Choice condition	−.25**
Treatment choice	−.48**
Age group	.97*
Choice condition × Age group	−.92*
Treatment choice × Age group	.27

* p<.05, ** p<.01.