Table 1.
Summary of sample characteristics by Trait Reward Sensitivity Group (N=87)
| Variable | HRew (n=59) | MRew (n=28) | ||
|---|---|---|---|---|
| M (SD) | % (n) | M (SD) | % (n) | |
| Gender | ||||
| Female | 49.2 (29) | 57.1 (16) | ||
| Age (years) | 20.9 (2.1) | 21.3 (2.1) | ||
| Race | ||||
| White | 52.5 (31) | 60.7 (17) | ||
| Black | 22.0 (13) | 32.1 (9) | ||
| Asian | 11.9 (7) | 3.6 (1) | ||
| Bi-/Multi-racial | 6.8 (4) | 3.6 (1) | ||
| Native American | 1.7 (1) | 0.0 (0) | ||
| Other or Unknown | 5.1 (3) | 0.0 (0) | ||
| Psychotropic Medication Status | ||||
| Not taken within past month | 94.9 (56) | 92.9 (26) | ||
| Currently taking | 5.1 (3) | 7.1 (2) | ||
| Lifetime Mood Disorder History | ||||
| Bipolar Disorder | 42.4 (25) | 0.0 (0) | ||
| Major Depressive Disorder | 11.9 (7) | 3.6 (1) | ||
| Reward-Relevant Life Events | ||||
| Goal-Striving | 5.0 (4.1) | 6.3 (5.6) | ||
| Goal-Attainment | 5.4 (4.6) | 6.0 (5.6) | ||
| Goal-Failure | 7.9 (7.6) | 9.9 (9.1) | ||
| BAS total | 46 (3.1) | 38 (1.0) | ||
| SR total | 17.8 (3.0) | 11 (1.6) | ||
Note. M, SD and % and n are used to represent mean, standard deviation, percentage, and frequency, respectively. Three HRew individuals reported current use of a prescribed antidepressant, stimulant, and anxiolytic. Two MRew individuals reported current use of a prescribed antidepressant. Goal-Striving, Goal-Attainment, and Goal-Failure events represent the three types of reward-relevant life events that participants experienced in the past six months. Abbreviations: HRew, High Trait Reward Sensitivity; MRew, Moderate Trait Reward Sensitivity; BAS, Behavioral Activation System scale; SR, Sensitivity to Reward subscale.