Alphonse Ryberg posted an update 6 months, 3 weeks ago
032, p = .445, or the performance on the visuospatial memory tests, r(617) = .010, p = .824. We first examined whether the scores on the verbal and visuospatial memory tests were affected by participant variables (i.e., age group, gender, level of education). Because the scores on the verbal and visuospatial memory tests had different ranges, the scores on each test were transformed to z-scores. Subsequently, three scores were calculated for each participant by averaging the z-transformed scores of (1) the six verbal memory tests, (2) the four visuospatial memory tests, and (3) all ten verbal and visuospatial memory tests. These scores were included as the dependent variables in three regression analyses, in which age group, gender and level of education XMU-MP-1 were the independent variables. Verbal memory was affected by age group (Beta = −.203, p < .001), gender (Beta = .101, p = .014) and level of education (Beta = .128, p = .002), F(3, 579) = 14.57, p < .001, R2 = .070. Visuospatial memory was affected by age group (Beta = −.160, p < .001) but not by gender (Beta = −.089, p = .054) or level of education (Beta = .062, p = .165), F(3, 486) = 5.44, p = .001, R2 = .032. Verbal and visuospatial memory was affected by age group (Beta = −.210, p < .001) and level of education (Beta = .125, p = .002) but not by gender (Beta = .049, p = .218), F(3, 613) = 14.01, p < .001, R2 = .064. Although the effects of gender and level of education did not reach significance on the visuospatial memory tests, all results were in the same direction as the results of Murre et al. (2013). We then examined the scores on the autobiographical memory test. The scores on the diary study could range from 0 to 14 (M = 8.95, SD = 3.32) and displayed a classic retention function (see Fig. 1), which fitted a power function well (y = 13.397x−0.151, R2 = .923). The number of days between recording and recalling of the personal event had a strong effect on autobiographical memory performance (Beta = −.485, p < .001), F(1, 615) = 189.33, p < .001, R2 = .235. Participants recalled more information about the event at shorter retention intervals than at longer retention intervals. We subsequently examined whether autobiographical memory performance was affected by the event variables with a hierarchical regression analysis, in which retention interval was entered in the first step and the event variables in the second step, F(7, 609) = 33.92, p < .001, ΔR2 = .045. Besides retention interval (Beta = −.477, p < .001), the scores on the diary study were influenced by reminiscing (Beta = .179, p = .003), importance (Beta = −.131, p = .002), valence (Beta = .112, p = .002) and frequency of occurrence (Beta = .128, p = .001). The scores on the diary study were not influenced by social sharing (Beta = −.080, p = .180) or emotionality (Beta = .028, p = .646).