Table 2.

Means (s.d.’s) for sample characteristics

	Adults	Adolescents
	N = 18 females	N = 18 females	Age group comparison
	Mean (s.d.)	Mean (s.d.)	t	P
Age	21.24 (1.55)	13.7 (0.77)
Verbal ability	14.67 (2.22)	13.89 (2.11)	−1.08	0.29
Non-verbal ability	11.94 (1.62)	12.11 (2.03)	0.27	0.79
Socioeconomic status	15.39 (3.78)	14.08 (5.11)	−0.87	0.39

Verbal and non-verbal ability were measured with the subtests of the Wechsler Adult Intelligence Scale for adult participants (German adaptation; von Aster et al., 2007) and the Wechsler Intelligence Scale For Children for adolescent participants (WISC-IV, German adaptation; Petermann and Petermann, 2007). For both verbal and non-verbal ability, scores are age corrected (mean = 10, s.d. = 3). Calculation of socioeconomic status included parents’ school education, professional education, recent professional status and family income following the procedure suggested by Winkler and Stolzenberg (2009). Scores for mothers and fathers were averaged into a family-based measure of socioeconomic background. The score ranges from 3 to 21 with higher values indicating higher socioeconomic status.