Table 1.
Participant characteristics and task performance
| Non-FHR | FHR | Between-group difference | |
|---|---|---|---|
| n | 18 | 19 | |
| Gender (male/female) | 4/14 | 5/14 | χ2(1, N = 37) = 0.08, P = 0.77 |
| Age | 26.2 (4.0) | 27.4 (3.9) | t(35) = 0.97, P = 0.34 |
| Education (years) | 16.3 (0.8) | 16.1 (1.5) | t(35) = 0.71, P = 0.48 |
| IQa | 118.3 (11.4) | 117.0 (9.8) | t(34) = 0.38, P = 0.71 |
| BDI-IIb | 1.9 (3.3) | 5.5 (5.4) | t(32) = 2.28, P = 0.03 |
| STAI-Stateb | 25.7 (5.6) | 27.7 (7.3) | t(32) = 0.89, P = 0.38 |
| STAI-Traitb | 29.1 (7.3) | 34.3 (8.7) | t(32) = 1.88, P = 0.07 |
| Lifetime Axis-I diagnosis (number of participants) | 2 | 9 | |
| MDD | — | 4 | |
| ADHD | — | 1 | |
| Substance abuse | 2 | — | |
| Comorbid diagnosesc | — | 4 | |
| SIPSd | |||
| Positive | 0.12 (0.33) | 2.83 (2.53) | U = 49.5, P < 0.001e |
| Negative | 0.06 (0.24) | 1.78 (1.96) | U = 64.0, P = 0.003 |
| Disorganized | 0.35 (0.61) | 2.00 (1.57) | U = 55.5, P = 0.001 |
| General | 0.24 (0.56) | 1.67 (1.78) | U = 76.0, P = 0.010 |
| Person-Description taska | |||
| Thought accuracy (%) | 90.2 (7.3) | 87.6 (12.3) | t(34) = 0.76, P = 0.45 |
| Emotion accuracy (%) | 96.5 (5.0) | 93.5 (9.7) | t(34) = 1.19, P = 0.25 |
| Appearance accuracy (%) | 94.0 (10.2) | 88.1 (13.9) | t(34) = 1.44, P = 0.16 |
| Thought RT (s) | 2.9 (0.4) | 3.2 (0.4) | t(34) = 1.79, P = 0.08 |
| Emotion RT (s) | 2.5 (0.5) | 2.7 (0.5) | t(34) = 1.19, P = 0.24 |
| Appearance RT (s) | 2.9 (0.5) | 3.0 (0.5) | t(34) = 1.27, P = 0.22 |
| False-Belief task | |||
| False-Belief accuracy (%) | 90.1 (10.7) | 88.5 (11.0) | t(35) = 0.47, P = 0.64 |
| False-Photo accuracy (%) | 90.0 (12.8) | 86.7 (13.1) | t(35) = 0.78, P = 0.44 |
| False-Belief RT (s) | 2.9 (0.5) | 3.3 (0.6) | t(35) = 2.55, P = 0.02 |
| False-Photo RT (s) | 3.0 (0.5) | 3.1 (0.5) | t(35) = 0.92, P = 0.37 |
When applicable, values represent means with standard deviations in parentheses. MDD, major depressive disorder; ADHD, attention deficit hyperactivity disorder. aData were not collected for one FHR participant. bData were not collected for two FHR and one non-FHR participant. cIndividuals were diagnosed with the following: MDD and anxiety (n = 2), MDD and ADHD (n = 1), MDD, anxiety, ADHD and substance abuse (n = 1). dData were not collected for 1 FHR and 1 non-FHR participant. eBecause these data were non-normally distributed, these variables were compared with nonparametric Mann–Whitney U-tests.