Table 2.

Mean scores with standard deviation, range, skewness, Kurtosis and Cronbach’s alpha for the four problem subscales and Impact scale in the Strengths and Difficulties Questionnaire (SDQ), the DAWBA RAD subscale, DSED subscale and total RAD/DSED Scale (N = 122)

Scale	N of items	Max score	Mean score	SD	Skewness	Kurtosis	α
SDQ Total Difficulties	20	40	0.75	0.41	0.14	−0.81	0.88
SDQ Emotional Symptoms	5	10	0.71	0.48	0.23	−0.82	0.69
SDQ Conduct Problems	5	10	0.58	0.48	0.66	−0.25	0.75
SDQ Hyperactivity-Inattention	5	10	1.19	0.58	−0.36	−0.87	0.82
SDQ Peer Problems	5	10	0.53	0.47	0.72	-0.14	0.70
SDQ Impact	5	10	0.51	0.53	0.69	−0.74	0.79
DAWBA RAD	5	10	0.35	0.37	1.26	1.46	0.60
DAWBA DSED	9	18	0.79	0.45	0.28	−0.60	0.82
DAWBA RAD/DSED	14	28	0.64	0.37	0.47	0.02	0.82

Mean score computed by dividing the sum score of each scale by the number items in the scale. Possible range of mean score: 0–2 for all scales. SDQ Strengths and Difficulties Questionnaire, DAWBA Developmental and Well-Being Assessment, RAD reactive attachment disorder, DSED disinhibited social engagement disorder