Table 1.

Rates of endorsement of offspring impulsive behavior for mother report, father report, and most severe report.

	Mother (Ns = 322–324)	Father (Ns = 296)	Severe (Ns = 367)
1. Fidgets	57%	59%	71%
2. Can’t stay seated when required to do so	46%	49%	58%
3. Impulsive acts without thinking	57%	60%	74%
4. Difficulty awaiting turn in games or groups	49%	58%	65%
5. Interrupts, blurts out answers to questions too soon	68%	70%	80%
6. Difficulty playing quietly	26%	42%	45%
7. Talks excessively	52%	62%	67%
8. Interrupts or butts in on others	76%	72%	83%
9. Does dangerous things without thinking	18%	27%	34%

Note. The impulsive behavior items came from the externalizing scale of the MacArthur Health and Behavior Questionnaire (HBQ; Armstrong et al., 2003). Fathers provided slightly higher endorsement rates of impulsive behavior than mothers.