. Author manuscript; available in PMC: 2017 Nov 1.

Published in final edited form as: J Abnorm Child Psychol. 2016 Nov;44(8):1487–1501. doi: 10.1007/s10802-016-0145-9

Table 7.

State, Trait, and Occasion Variance in Hyperactivity and Inattention at Each Time-Point

	Hyperactivity					Inattention

Time-point	State Total	Trait Total	Trait Percentage	Occasion Total	Occasion Percentage (stable, disturbance)	State Total	Trait Total	Trait Percentage	Occasion Total	Occasion Percentage (stable, disturbance)
Pre-school	2.55	1.06	41%	1.50	59%	2.23	0.96	43%	1.27	57%
Kindergarten	2.36	1.06	45%	1.31	55% (0.5%, 54.8%)	2.01	0.96	48%	1.05	52% (3.4%, 48.9%)
Grade 1	2.36	1.06	45%	1.31	55% (0.5%, 54.8%)	2.75	0.96	35%	1.80	65% (2.0%, 63.2%)
Grade 2	2.36	1.06	45%	1.31	55% (0.5%, 54.8%)	2.99	0.96	32%	2.03	68% (3.2%, 64.8%)
Average			44%		56% (0.5%, 54.8%)			39%		61% (2.9%, 59.0%)

Note. Formulae for variance components are in Appendix B.