Table 2.

Patterns of early behavioral problems at age 6–7 (Boys, n = 574)

Cluster means
Cluster no	Size (%)	Aggressiveness	Restlessness	Underachievement	Immaturity	Shyness	Conduct scores
1	72 (12.7)	0.03	0.06	0.26	0.17	0.24	0.00
2	230 (40.6)	0.07	0.12	0.25	0.07	0.17	1.35
3	43 (7.6)	0.37	0.14	1.35	1.42	2.19	0.74
4	76 (13.4)	0.68	1.37	1.21	1.50	0.53	1.80
5	62 (10.9)	1.48	0.68	0.53	0.27	0.26	2.08
6	45 (7.9)	2.51	2.58	2.18	1.98	0.22	2.33
7	39 (6.9)	2.41	2.64	2.33	2.56	2.67	2.21
Residual	7	1.50	2.50	1.67	1.67	2.00	1.17

Note. All scores are 0–3

1. No problems

2. Mild conduct problems

3. High shyness

4. Moderate problems but not shy or aggressive

5. Moderate aggressiveness

6. Multiple problems but not shy

7. Multiple problems