The relationship between prospective memory, working memory and self-rated memory performance in individuals with intellectual disability

Table 1.

Individuals With Intellectual DisabilityIndividuals Without Intellectual DisabilityTestPerson 1Person 2Person 3Person 4Person 5M (SD)MinMaxnM (SD)MinMaxntProspective memory0508135.2 (5.54)013522.70 (1.34)2024106.962^a*Prospective memory With cue4971157.2 (2.86)41150.70 (1.06)03103.653^a*Prospective memory lapses2215324.8 (5.72)2155000101.877^a*Recognition–^b–^b67107.67 (2.08)710311.2 (.63)1012102.90 ^ad’–^b–^b−2.24−3.73.10−1.96 (1.93)−3.73.103.59 (.94)−1.981.26103.262*criterion–^b–^b−1.53.39−.36−.50 (.97)−1.53.393.15 (.41)−.071.26101.781Long delay prospective memory–^b51554 (2)1543.20 (2.15)0510.640Picture span1424570839887.60 (36.10)451525415.60 (42.21)3444621014.813*Less complex picture span872044465550.40 (24.21)20875211.10 (18.02)1772331014.57*More complex picture span552526374337.20 (12.50)25555204.50 (26.52)1532321016.59^a*Photos822228417048.60 (26.28)22825204.00 (24.67)1612311011.27*Drawings602342422839.0 (14.46)23605211.60 (18.71)1822341017.99*Objects831839646253.200 (25.11)18835212.30 (21.37)163.0236.01012.86*Individuals/faces592731193634.40 (15.09)19595203.30 (24.52)154.0232.01013.98*Digit span129482211.00 (6.78)422552.7 (8.84)4074109.211*Self-rating of prospective memory5248–^c–^c4448.00 (4.00)4452350.89 (7.69)40669.610Self-rating of retrospective memory5541–^c–^c4747.70 (7.02)4155348.33 (17.09)5639.95Notes. ^aEqual variance not assumed (significant result on Levene's test for equality in variance).^bTask not distributed.^cUnable to perform task.*p<.05