Table 1.

Descriptive Statistics and Bivariate Relations Among the Variables

	Pooled Mean	SD	Range	2	3	4	5	6	7	8
1. Synchrony in concentration	−0.92	12.31	−21.74 – 39.37	.14	.07	.35**	.12	.11	.11	.19
2. Synchrony in reactivity	−1.02	9.76	−22.54 – 28.11	–	−.19	.17	−.10	−.13	.02	.17
3. Maternal worry	2.73	0.71	1.25 – 4.31		–	.25†	.32*	.22	−.02	−.05
4. Inhibited temperament	−0.10	0.95	−1.60 – 2.66			–	.60***	.34*	−.03	.44***
5. Age 2 internalizing	0.54	0.24	0.00 – 1.04				–	.49**	−.15	.40**
6. Age 3 internalizing	0.49	0.20	0.11 – 0.91					–	−.04	.28*
7. SES	47.85	13.39	17.00 – 66.00						–	.14
8. Maternal Accuracy	0.08	0.04	0.01 – 0.18							–

Note. Synchrony represents the unstandardized residual from a regression equation in which maternal cortisol output predicted toddler cortisol output. Inhibited temperament is a composite of observed and maternal-reported inhibition.

^†p < .10,

^*p < .05,

^**p < .01,

^***p < .001.