Table 6.
Group differences in personality and psychological symptoms on MMPI-2
| Variables | NSSI+SA (N=27) | NSSI (N=14) | SA (N=39) | Total (N=80) | F or χ2 | p |
|---|---|---|---|---|---|---|
| Validity scales | ||||||
| F | 64.52 (11.6) | 63.64 (12.79) | 61.67 (14.92) | 62.98 (13.42) | 2.008 | 0.366 |
| L | 41.63 (7.14) | 45.00 (8.51) | 45.56 (9.4) | 44.14 (8.63) | 2.797 | 0.247 |
| K | 39.48 (6.36) | 41.64 (9.65) | 43.38 (7.63) | 41.76 (7.73) | 4.247 | 0.120 |
| S | 38.04 (8.32) | 38.86 (12.08) | 42.64 (9.54) | 40.43 (9.77) | 4.799 | 0.091 |
| Clinical scales | ||||||
| Hs | 60.74 (9.65) | 64.36 (10.55) | 58.23 (13.85) | 60.15 (12.09) | 2.484 | 0.289 |
| D | 67.96 (12.31) | 73.00 (10.87) | 67.77 (14.04) | 68.75 (12.96) | 1.984 | 0.371 |
| Hy | 58.41 (7.02) | 59.86 (8.97) | 58.00 (12.07) | 58.46 (10) | 0.174 | 0.840 |
| PD | 61.93 (10.92) | 65.07 (11.33) | 66.82 (12.38) | 64.86 (11.79) | 1.391 | 0.255 |
| Mf | 48.78 (12.79) | 51.86 (10.5) | 51.92 (11.49) | 50.85 (11.74) | 0.629 | 0.536 |
| Pa | 69.70 (11.42) | 69.86 (13.61) | 64.49 (14.52) | 67.19 (13.48) | 1.547 | 0.219 |
| Pt | 71.15 (11.69) | 74.79 (14.84) | 66.72 (15.79) | 69.63 (14.52) | 3.346 | 0.188 |
| Sc | 70.07 (13.73) | 70.00 (13.26) | 65.56 (14.92) | 67.86 (14.25) | 0.989 | 0.377 |
| Ma | 55.85 (10.23) | 50.93 (10.67) | 50.21 (9.17) | 52.24 (10.02) | 5.090 | 0.078 |
| Si | 63.30 (12) | 70.79 (17.59) | 64.79 (16.31) | 65.34 (15.27) | 1.161 | 0.319 |
| Restructured clinical scales | ||||||
| RCd | 76.59 (8.85) | 75.43 (11.69) | 71.67 (13.29) | 73.99 (11.77) | 1.543 | 0.220 |
| RC1 | 67.56 (13.98) | 69.29 (14.67) | 60.97 (17.52) | 64.65 (16.15) | 2.079 | 0.132 |
| RC2 | 66.15 (12.56) | 70.43 (13.78) | 67.21 (15.46) | 67.41 (14.15) | 0.423 | 0.656 |
| RC3 | 59.22 (14.9) | 63.5 (15.36) | 55.79 (13.12) | 58.30 (14.24) | 1.616 | 0.205 |
| RC4 | 61.63 (14.79) | 62.14 (14.38) | 61.67 (14.37) | 61.74 (14.33) | 0.007 | 0.993 |
| RC6 | 61.44 (13.65) | 57.36 (18.85) | 55.44 (14.78) | 57.80 (15.24) | 1.255 | 0.291 |
| RC7 | 69.33 (15.01) | 69.07 (15.22) | 64.08 (15.73) | 66.73 (15.43) | 1.125 | 0.330 |
| RC8 | 68.15 (16.06) | 60.07 (14.64) | 58.23 (15.51) | 61.90 (16.01) | 6.690 | 0.035 |
| RC9 | 58.37 (12.94) | 51.21 (10.57) | 48.69 (8.66) | 52.40 (11.36) | 8.428 | 0.015 |
MMPI-2: Minnesota Multiphasic Personality Inventory-2, NSSI: non-suicidal self-injury, SA: suicide attempt, L: lie scale, F: infrequency scale, K: correction scale, S: superlative self-presentation scale, Hs: hypochondriasis, D: depression, Hy: hysteria, Pd: psychopathic deviate, Pa: paranoia, Pt: psychasthenia, Sc: schizophrenia, Ma: mania, Si: social introversion, RCd: demoralization, RC1: somatic complaints, RC2: low positive emotions, RC3: cynicism, RC4: antisocial behavior, RC6: ideas of persecution, RC7: dysfunctional negative emotions, RC8: aberrant experiences, RC9: hypomanic activation