Table 1.

Descriptive Information and T-Tests for Between-Waves Comparisons

Child Measures	Wave 1 Mean N = 192	Wave 3 Mean N = 83	Total (Across Waves) N = 275	Min	Max	t	df
AKT	-.04 (.51)	.07 (.54)	-.01 (.52)	-2.06	.52	1.53	273
PSRA: inhibition	-.02 (.59)	.03 (.61)	-.00 (.59)	-1.94	1.12	.55	273
PSRA: noncompliance	.03 (.74)	-.03 (.65)	.01 (.71)	-1.43	2.60	-.65	273
CST: sad/prosocial	2.23 (1.61)	1.99 (1.41)	2.16 (1.55)	.00	6.00	-1.18	273
CST: angry/aggressive	1.49 (1.29)	1.28 (1.41)	1.43 (1.33)	.00	6.00	-1.22	273
MPAC: emotionally positive-productive	2.76 (.86)	2.77 (.84)	2.76 (.85)	-1.00	4.67	.09	273
MPAC: emotionally negative-aggressive	.48 (.51)	.59 (.46)	.51 (.50)	.00	2.50	1.76+	273
MPAC: emotionally regulated/prosocial-peer oriented	.68 (.68)	.86 (.71)	.74 (.69)	.00	3.33	1.90+	273

Preschool Measures	N = 184	N = 82	N = 266
PLBS	1.51 (.40)	1.53 (.33)	1.52 (.38)	.50	2.00	.36	187.39a
SCBE: angry/aggressive	2.03 (1.11)	2.05 (.92)	2.03 (1.05)	1.00	5.00	.19	186.77a
SCBE: sensitive/cooperative	3.54 (.81)	3.49 (.75)	3.52 (.79)	1.70	5.00	-.46	264
SCBE: anxious/withdrawn	1.81 (.76)	1.74 (.73)	1.79 (.75)	1.00	5.20	-.70	264

Kindergarten Measures	N = 67, 69	N = 26	N = 93, 95
ECLS-K	.27 (3.05)	-.69 (2.05)	.00 (2.83)	-6.50	4.46	-1.74+	67.38a
STRS	4.14 (.66)	4.14 (.55)	4.14 (.63)	2.00	4.96	-.01	93
PLBS	1.51 (.44)	1.56 (.35)	1.52 (.42)	.38	2.00	.66	56.48a
SCBE: angry/aggressive	1.84 (1.04)	1.85 (.91)	1.84 (1.00)	1.00	4.90	.03	93
SCBE: sensitive/cooperative	3.48 (.87)	3.36 (.66)	3.45 (.82)	1.60	4.90	-.73	59.30a
SCBE: anxious/withdrawn	1.84 (.69)	1.58 (.52)	1.77 (.66)	1.00	3.70	-1.96+	59.24a

Note: AKT and PSRA scores were created with z-scores.

⁺p < .10.

^aEqual variance not assumed.