. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: Psychol Aging. 2009 Mar;24(1):139–153. doi: 10.1037/a0014029

Table 3.

Regions of Interest (ROI) used to examine effects of Confidence Level (CONF: High or Low) and Recognition Accuracy (ACC: Correct or Incorrect) during confidence assessment trials that showed greater activity during high confidence compared to low confidence trials in younger, but not older adults.

Region	Coordinates	# Voxels	Main Effects	Interactions	Effects in Younger Adults Related to Interaction	Effects in Older Adults Related to Interaction
Left Medial Temporal Lobe	−27 −18 −21	96	CONF: F(1,30)=14.67, p<0.001, η_p²=0.33	CONF × AGE: F(1,30)=13.99, p<0.001, η_p²=0.32	CONF: F(1,15)=22.85, p<0.0003, η_p²=0.60	CONF: n.s., η_p²=0.0003
Right Medial Temporal Lobe	39 −18 −21	108	CONF: F(1,30)=15.16, p<0.001, η_p²=0.34	CONF × AGE: F(1,30)=13.01, p<0.001, η_p²=0.30	CONF: F(1,15)=26.26, p<0.0002, η_p²=0.64	CONF: n.s., η_p²=0.003
			ACC: F(1,30)=5.57, p<0.025, η_p²=0.16

Note: Main effects of condition (CONF, ACC) and interactions between conditions or group (Age: Younger or Older) from a Mixed ANOVA are reported. For regions with significant interactions, results from relevant within groups ANOVAs are reported. Partial eta-squared (η_p²) values are reported as a measure of effect size.