Table 3.

Assessment age for item thresholds exhibiting significant differences relative to their average (prior variance = 0.01).

	Youngest Cohort Age	Middle Cohort Age	Oldest Cohort Age
Items
Exaggerates	8,10,14
Lying or cheating	11
Manipulates people	7, 8, 12
Fast or smooth talker	7, 8	13
Doesn’t seem to feel guilty after misbehaving			14, 16
Cruelty, bullying, or meanness to others			13, 16
Teases a lot	7, 8, 12, 14		13, 16
Cannot always trust what he says
Sudden changes in mood or feelings
Impulsive or acts without thinking	7, 11	13
Wants to have things right away
Behaves irresponsibly	7, 8, 13, 14	13
Easily frustrated, demands must be met immediately			13, 15
Behaves explosively and unpredictably

Notes. Only threshold parameters are displayed, as there was no evidence of item loading invariance for any cohort across assessments.