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. Author manuscript; available in PMC: 2010 Apr 12.
Published in final edited form as: Int J Aging Hum Dev. 2010;70(1):61–87. doi: 10.2190/AG.70.1.c

Table 3.

Age Differences and Effect Sizes (Cohen’s d) for Memory Self-Concept and Memory Control Scales and Interview Ratings.

Young Adults Older Adults
Mean SD Mean SD d
PBMI Scales
 Global Memory ability 24.46 18.74 16.53 20.27 1.28**
 Memory relative to all ages 23.03 17.45 6.60 17.52 2.77**
 Memory relative to age peers 15.11 18.93 13.28 14.65 .31
 Control 21.03 8.23 18.58 17.78 .47
Interview Ratings
 Present ability 2.91 .65 2.79 .81 .08
 Perceived control 3.05 .58 2.91 .73 .17
**

p < .01