Table 1. Means, standard deviations (SD), and Mann–Whitney U test with effect size (r) for gender differences.
| Global sample | Men | Women | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mann–Whitney U | Effect size (r) | |
| BDI Total | 8.42 | 8.57 | 7.48 | 7.80 | 8.73 | 8.80 | 54,537 | 0.05 |
| SRP-III Total | 61.04 | 14.06 | 66.18 | 16.26 | 59.34 | 12.82 | 42,988** | 0.20 |
| MACH-IV | 67.10 | 13.61 | 69.01 | 14.81 | 66.47 | 13.15 | 52,739* | 0.07 |
| NPI Total | 11.96 | 5.05 | 12.39 | 5.30 | 11.82 | 4.96 | 54,869 | 0.04 |
| IPM (SRP-III) | 14.76 | 4.68 | 16.47 | 5.18 | 14.19 | 4.35 | 41,895** | 0.21 |
| CT (SRP-III) | 15.31 | 5.55 | 17.27 | 6.56 | 14.66 | 5.01 | 43,674** | 0.19 |
| ELS (SRP-III) | 17.37 | 5.36 | 18.39 | 5.82 | 17.03 | 5.16 | 50,516** | 0.10 |
| CA (SRP-III) | 13.61 | 3.32 | 14.05 | 3.52 | 13.46 | 3.24 | 53,229 | 0.07 |
| T (MACH-IV) | 28.05 | 7.39 | 29.26 | 7.88 | 27.65 | 7.18 | 51,335** | 0.09 |
| V (MACH-IV) | 29.31 | 7.10 | 29.95 | 7.29 | 29.10 | 7.02 | 54,665 | 0.05 |
| M (MACH-IV) | 1.51 | 0.91 | 1.67 | 1.07 | 1.46 | 0.84 | 52,679* | 0.09 |
| AUT (NPI) | 3.08 | 1.47 | 3.19 | 1.53 | 3.04 | 1.45 | 54,846 | 0.05 |
| SS (NPI) | 2.54 | 1.25 | 2.58 | 1.19 | 2.53 | 1.27 | 56,593 | 0.03 |
| VAN (NPI) | 0.80 | 0.93 | 0.66 | 0.92 | 0.84 | 0.93 | 51,280** | 0.10 |
| EXP (NPI) | 1.40 | 1.24 | 1.51 | 1.26 | 1.36 | 1.24 | 54,391 | 0.05 |
| ENT (NPI) | 1.24 | 1.06 | 1.43 | 1.14 | 1.18 | 1.02 | 51,525** | 0.09 |
| SUP (NPI) | 1.61 | 1.07 | 1.75 | 1.16 | 1.56 | 1.03 | 53,441 | 0.07 |
| EXH (NPI) | 1.30 | 1.48 | 1.26 | 1.51 | 1.32 | 1.47 | 56,280 | 0.03 |
Notes:
SRP-III (IPM, interpersonal manipulation; CT, criminal tendencies; ELS, erratic lifestyle; CA, callous affect); MACH-IV (T, interpersonal tactics; V, cynical view of human nature; M, Disregard for conventional morality); NPI (AUT, authority, SS, self-sufficiency; VAN, vanity; EXP, exploitativeness; ENT, entitlement; SUP, superiority; EXH, exhibitionism).
*
p < 0.05.
**
p < 0.01.