Table 1.
Sample descriptive data (means and standard deviations) and inference statistics (age, treatment, and age × treatment effects) for demographic, cognitive, affective, and health measures (N = 85).
| Oxytocin Young M (SD) | Older M (SD) | Placebo Young M (SD) | Older M (SD) | Inference Statistics Age | Treatment | Age × Treatment | |
|---|---|---|---|---|---|---|---|
| Demographics Height (inches) | 69.06 (3.89) | 66.90 (4.83) | 67.50 (3.40) | 67.77 (5.12) | F = 0.97, p = 0.33, ηp2 = 0.01 | F = 0.13, p = 0.72, ηp2 = 0.002 | F = 1.61, p = 0.21, ηp2 = 0.02 |
| Weight (lbs) | 152.38 (26.34) | 159.52 (34.88) | 168.17 (46.25) | 174.14 (32.86) | F = 0.74, p = 0.40, ηp2 = 0.01 | F = 3.96, p = 0.05, ηp2 = 0.05 | F = 0.01, p = 0.94, ηp2 < 0.001 |
| Education (yrs) | 15.13 (2.07) | 16.95 (3.46) | 16.44 (2.83) | 16.14 (2.66) | F = 1.57, p = 0.22, ηp2 = 0.02 | F = 0.17, p = 0.68, ηp2 = 0.002 | F = 3.09, p = 0.08, ηp2 = 0.04 |
| Cognition DSST | 63.17 (8.16) | 46.00 (7.55) | 66.83 (12.86) | 46.36 (8.63) | F = 85.54, p < 0.001, ηp2 = 0.51 | F = 0.98, p = 0.33, ηp2 = 0.01 | F = 0.66, p = 0.42, ηp2 = 0.01 |
| RAVLT | 8.96 (2.12) | 7.05 (2.42) | 9.22 (1.93) | 7.73 (2.53) | F = 11.83, p = 0.001, ηp2 = 0.13 | F = 0.91, p = 0.34, ηp2 = 0.01 | F = 0.18, p = 0.68, ηp2 = 0.002 |
| Affect (PANAS) Positive | 27.29 (6.44) | 32.86 (5.27) | 26.83 (7.32) | 35.68 (5.84) | F = 28.21, p < 0.001, ηp2 = 0.26 | F = 0.76, p = 0.39, ηp2 = 0.01 | F = 1.46, p = 0.23, ηp2 = 0.02 |
| Negative | 11.33 (1.55) | 13.00 (3.83) | 12.78 (3.14) | 11.62 (2.01) | F = 0.18, p = 0.67, ηp2 = 0.002 | F = 0.003, p = 0.96, ηp2 < 0.001 | F = 5.55, p = 0.02, ηp2 = 0.07 |
| Health Physical | 8.71 (1.04) | 8.43 (1.08) | 8.17 (1.34) | 8.68 (1.09) | F = 0.23, p = 0.63, ηp2 = 0.003 | F = 0.34, p = 0.56, ηp2 = 0.004 | F = 2.60, p = 0.01, ηp2 = 0.03 |
| Mental | 8.50 (1.38) | 8.67 (1.53) | 8.39 (1.14) | 9.09 (0.92) | F = 2.46, p = 0.12, ηp2 = 0.03 | F = 0.32, p = 0.57, ηp2 = 0.004 | F = 0.93, p = 0.34, ηp2 = 0.01 |
| Plasma Oxytocin | 677.69 (255.00) | 647.99 (218.28) | 694.80 (174.02) | 629.87 (181.17) | F = 0.98, p = 0.33, ηp2 = 0.01 | F = 0.009, p = 0.93, ηp2 < 0.001 | F = 0.14, p = 0.71, ηp2 = 0.002 |
Note: Sensorimotor processing speed was measured by total items correct in the Digit Symbol Substitution Test (DSST; score range = 34 – 93; Wechsler, 1981). Short-term verbal learning memory was measured by total items correct in the Rey Auditory Verbal Learning Test (RAVLT; score range = 4 – 14; Rey, 1964). Present mood was measured by the Positive Affect Negative Affect Schedule (PANAS; score range of Positive Affect = 16 – 46, score range of Negative Affect = 10 – 20; Watson et al., 1988); Physical (score range = 5 – 10) and mental (score range = 3 – 10) health were assessed with single items on a scale from 1 = poor to 10 = excellent. M = Mean, SD = Standard deviation, ηp2 = partial eta-squared; Bold indicates significant effect at p < 0.05.