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Table 3. 

Mean Scores (and Standard Deviations in Brackets) on the Test Phases of the Memory Tasks


Young Adults
Older Adults
Recognition Task
Source Task
Recognition Task
Source Task
Word
Picture
Word
Picture
Word
Picture
Word
Picture
Response Rates 
Correct rejections 0.89 (0.11) 0.88 (0.10) 0.92 (0.08) 0.93 (0.09) 0.91 (0.09) 0.84 (0.08) 0.92 (0.06) 0.86 (0.07) 
Hits 0.88 (0.11) 0.83 (0.07) 0.85 (0.09) 0.78 (0.12) 0.78 (0.08) 0.78 (0.13) 0.73 (0.13) 0.79 (0.09) 
Correct source as proportion of recognition hits   0.69 (0.15) 0.83 (0.11)   0.59 (0.09) 0.68 (0.12) 
Correct source as proportion of all old items   0.58 (0.16) 0.63 (0.14)   0.43 (0.13) 0.54 (0.13) 
 
Performance Indices 
Item recognition (Pr) 0.77 (0.16) 0.71 (0.14) 0.77 (0.10) 0.70 (0.18) 0.69 (0.12) 0.62 (0.13) 0.65 (0.13) 0.65 (0.06) 
Response bias (Br) 0.46 (0.30) 0.39 (0.16) 0.36 (0.24) 0.23 (0.17) 0.29 (0.17) 0.44 (0.18) 0.26 (0.16) 0.40 (0.18) 
 
Response Time 
Correct rejections 1043 (271) 1200 (280) 1059 (267) 1231 (284) 1188 (216) 1331 (237) 1235 (202) 1498 (253) 
Hits 1007 (216) 1052 (204) 1130 (297) 1200 (279) 1154 (166) 1177 (187) 1307 (196) 1455 (215) 
Source hits   717 (377) 639 (312)   966 (317) 884 (278) 

Young Adults
Older Adults
Recognition Task
Source Task
Recognition Task
Source Task
Word
Picture
Word
Picture
Word
Picture
Word
Picture
Response Rates 
Correct rejections 0.89 (0.11) 0.88 (0.10) 0.92 (0.08) 0.93 (0.09) 0.91 (0.09) 0.84 (0.08) 0.92 (0.06) 0.86 (0.07) 
Hits 0.88 (0.11) 0.83 (0.07) 0.85 (0.09) 0.78 (0.12) 0.78 (0.08) 0.78 (0.13) 0.73 (0.13) 0.79 (0.09) 
Correct source as proportion of recognition hits   0.69 (0.15) 0.83 (0.11)   0.59 (0.09) 0.68 (0.12) 
Correct source as proportion of all old items   0.58 (0.16) 0.63 (0.14)   0.43 (0.13) 0.54 (0.13) 
 
Performance Indices 
Item recognition (Pr) 0.77 (0.16) 0.71 (0.14) 0.77 (0.10) 0.70 (0.18) 0.69 (0.12) 0.62 (0.13) 0.65 (0.13) 0.65 (0.06) 
Response bias (Br) 0.46 (0.30) 0.39 (0.16) 0.36 (0.24) 0.23 (0.17) 0.29 (0.17) 0.44 (0.18) 0.26 (0.16) 0.40 (0.18) 
 
Response Time 
Correct rejections 1043 (271) 1200 (280) 1059 (267) 1231 (284) 1188 (216) 1331 (237) 1235 (202) 1498 (253) 
Hits 1007 (216) 1052 (204) 1130 (297) 1200 (279) 1154 (166) 1177 (187) 1307 (196) 1455 (215) 
Source hits   717 (377) 639 (312)   966 (317) 884 (278) 
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