Age-related differences |
60–64 (N = 192) |
1.97 ± 2.78 |
1.98 ± 3.12 |
1.74 ± 2.96 |
5.70 ± 8.01 |
65–69 (N = 221) |
1.89 ± 2.65 |
1.56 ± 2.90 |
1.40 ± 2.47 |
4.85 ± 7.15 |
70–74 (N = 219) |
2.25 ± 2.98 |
1.98 ± 3.25 |
1.31 ± 2.36 |
5.54 ± 7.71 |
75–79 (N = 133) |
2.53 ± 3.15 |
2.70 ± 3.86 |
1.71 ± 2.92 |
6.93 ± 8.65 |
≥ 80 (N = 119) |
3.89 ± 3.75 |
2.43 ± 3.84 |
1.82 ± 3.14 |
8.14 ± 9.38 |
F, df, p-value, effect size |
F = 10.03, p < .0001, η2 = .04 |
F = 2.89, p < .02, η2 = .01 |
F = 1.24, p < .29 |
F = 3.94, p < .004, η2 = .02 |
Gender-related differences |
Male (N = 402) |
2.34 ± 2.99 |
1.78 ± 3.22 |
1.42 ± 2.72 |
5.54 ± 7.90 |
Female (N = 482) |
2.38 ± 3.13 |
2.27 ± 3.42 |
1.66 ± 2.73 |
6.31 ± 8.23 |
Sum (N = 884) |
2.36 ± 3.07 |
2.04 ± 3.34 |
1.55 ± 2.72 |
5.96 ± 8.08 |
t, p-value |
t = −0.20 |
t = −2.18, p < .03 |
t = −1.29, p <,20 |
t = −1.41, p < .16 |
Social-class-related differences |
Lower class (N = 427) |
2.80 ± 3.38 |
2.52 ± 3.73 |
1.83 ± 3.10 |
7.15 ± 9.06 |
Middle class (N = 336) |
2.04 ± 2.76 |
1.69 ± 3.03 |
1.37 ± 2.46 |
5.09 ± 7.34 |
Upper class (N = 121) |
1.72 ± 2.46 |
1.36 ± 2.35 |
1.11 ± 1.71 |
4.18 ± 5.35 |
F, p-value, effect size |
F = 9.15, p < .0001, η2 = .02 |
F = 8.98, p < .0001, η2 = .02 |
F = 4.64, p < .01, η2 = .01 |
F = 9.71, p < .0001, η2 = .02 |