Table 5.

Means (with SEs) estimates of item and source memory discrimination

Age groupItem recognitionSource memory
Young adults0.78 (0.04)0.52 (0.04)0.51 (0.05)0.27 (0.03)
Older adults0.72 (0.03)0.42 (0.03)0.44 (0.04)0.25 (0.03)
  • Item recognition reflects the difference between the hit and false alarm rate regardless of source memory accuracy. Source memory was computed with the source pR formula (see Behavioral data analysis) only for studied images attracting an accurate old response.