Table 1.

Descriptive statistics and IDI value for individual test items.

	Early adulthood (N = 1,659)					Adolescents (N = 400)					Problem group (N = 656)
RS14	M	SD	Skewness	Kurtosis	IDI	M	SD	Skewness	Kurtosis	IDI	M	SD	Skewness	Kurtosis	IDI
Item 1	5.50	1.13	−0.84	1.17	0.78	5.00	1.32	−0.66	0.40	0.71	5.04	1.53	−0.46	−0.40	0.72
Item 2	4.97	1.51	−0.54	−0.23	0.70	5.02	1.58	−0.52	−0.39	0.72	5.22	1.75	−0.80	−0.23	0.75
Item 3	4.26	1.56	−0.17	−0.63	0.60	4.46	1.60	−0.39	−0.45	0.64	4.34	1.87	−0.27	−0.92	0.62
Item 4	4.82	1.61	−0.54	−0.38	0.68	5.16	1.81	−0.75	−0.38	0.74	5.15	1.91	−0.79	−0.46	0.74
Item 5	5.12	1.35	−0.68	0.18	0.73	4.53	1.56	−0.36	−0.35	0.65	4.63	1.72	−0.50	−0.43	0.66
Item 6	5.06	1.37	−0.57	0.07	0.72	4.65	1.57	−0.41	−0.25	0.66	4.56	1.74	−0.41	−0.51	0.65
Item 7	5.02	1.41	−0.45	−0.16	0.71	4.71	1.60	−0.38	−0.40	0.67	5.30	1.69	−0.90	0.08	0.76
Item 8	4.81	1.57	−0.44	−0.51	0.68	4.59	1.53	−0.39	−0.26	0.66	4.61	1.78	−0.49	−0.54	0.66
Item 9	5.60	1.42	−1.03	0.64	0.80	5.83	1.50	−1.29	0.94	0.83	5.84	1.57	−1.41	1.32	0.83
Item 10	5.55	1.36	−0.88	0.30	0.79	5.67	1.47	−1.12	0.87	0.81	5.61	1.60	−1.12	0.55	0.80
Item 11	4.59	1.62	−0.35	−0.59	0.65	4.94	1.62	−0.63	−0.20	0.71	5.12	1.76	−0.72	−0.34	0.73
Item 12	5.93	1.04	−1.18	2.18	0.84	5.51	1.45	−1.09	0.94	0.79	5.69	1.48	−1.19	0.98	0.81
Item 13	5.52	1.59	−1.03	0.34	0.78	5.39	1.78	−0.91	−0.16	0.77	5.26	1.87	−0.83	−0.39	0.75
Item 14	5.22	1.12	−0.51	0.47	0.74	5.03	1.39	−0.71	0.50	0.72	5.06	1.65	−0.71	−0.19	0.72