Table 1.

Items from the first unrotated factor (and factor loadings) derived from a principal component analysis of the self-reported behavior scale

0.61	Do you ever cheat at games with other children?
0.60	Do you ever tell lies?
0.59	Do you talk back to people?
0.55	Are you ever mean or cruel to other children?
0.52	Do you ever boss other children around?
0.48	Have you ever had a nail-biting problem?
0.47	Do you misbehave after being warned?
0.44	Do you ever boast or brag?
0.43	How often do you fight with other children (outside the family)?
−0.41	Have you been well-behaved since early childhood?
−0.42	Are you obedient and do what you are told?
−0.43	How cooperative are you with your parents?
−0.43	How well do you get along with others?

Note: Although only items with factor loadings >0.40 are reported, factor analyses were calculated using all items in the questionnaire.