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Table 1 Descriptive statistics for the total sample and differences between boys and girls

From: Psychometric properties of the German version of the Youth Psychopathic traits Inventory – short version

 

Total sample

(n = 856)

Boys

(n = 488)

Girls

(n = 368)

  
 

M (SD)

t; p

Cohen’s d

YPI-S GM

11.08 (3.68)

11.90 (3.78)

9.99 (3.24)

7.91;< .001

0.54

YPI-S CU

10.58 (3.44)

11.51 (3.45)

9.34 (3.00)

9.76;< .001

0.67

YPI-S II

13.11 (3.09)

13.15 (3.05)

13.06 (3.15)

0.41; .684

0.03

YPI-S Total

34.73 (7.85)

36.51 (8.02)

32.36 (6.95)

8.06; < .001

0.55

MAYSI-2 ADU

1.77 (2.17)

2.22 (2.31)

1.17 (1.79)

7.49; < .001

0.51

MAYSI-2 AI

2.46 (2.23)

2.22 (2.12)

2.79 (2.34)

−3.66; < .001

−0.26

MAYSI-2 AD

1.40 (1.62)

1.07 (1.34)

1.85 (1.84)

−6.86; < .001

−0.49

Delinquent versatility

1.91 (2.32)

2.56 (2.62)

1.04 (1.44)

10.09; <.001

0.69

 

% (n)

χ2; p

OR

Any offense

66.6 (570)

76.8 (375)

53.0 (195)

53.66; < .001

0.34

Vandalism

30.5 (261)

41.2 (201)

16.3 (60)

61.30; < .001

0.28

Property offense

54.9 (470)

61.3 (299)

46.5 (171)

18.57; < .001

0.55

Violent offense

26.4 (226)

36.7 (179)

12.8 (47)

61.72; < .001

0.25

  1. Notes. YPI-S Youth Psychopathic Traits Inventory-Short Version, GM Grandiose-Manipulative, CU Callous-Unemotional, II Impulsive-Irresponsible, MAYSI-2 Massachusetts Youth Screening Instrument-Version 2, ADU Alcohol/Drug Use, AI Angry-Irritable, AD Anxious-Depressed