# Table 2 Means, standard deviations and bivariate correlations for main study variables and covariates

Variables Mean SD 1 2 3 4 5 6 7 8 9 10 11
NIH toolbox composite (child) 104.10 15.05 1 .21* .26** − .11 .03 − .13 .27** .06 .04 .25** − .13
Backward Digit Span 3.62 1.76 .21* 1 .42** − .14 − .05 − .06 .22** .05 .12 .02 − .01
Simon Says 43.60 10.43 .26* .42** 1 − .10 .001 − .17 .19* .06 .06 .23* − .04
Household chaos 0 .69 − .11 − .14 − .10 1 .74** .50** − .20* − .05 .38** − .16 − .02
Household disorganization .01 .77 .03 − .05 .001 .74** 1 − .09 − .12 − .07 .34** − .04 − .07
Household instability 0 .72 − .13 − .06 − .17 .50** − .09 1 − .09 − .03 .09 − .08 .08
Parental responsiveness 0 .89 .27** .22* .19* − .20* − .12 − .09 1 .11 − .17 .14 .06
Maternal executive function 0 .88 .06 .05 .06 − .05 − .07 − .03 .11 1 − .17 .07 .10
Maternal depression 7.79 7.28 .04 .12 .06 .38** .34** .09 − .17 − .17 1 − .29** − .08
Household income (median, CAD) \$105,000 – 133, 499   .25** .02 .23* − .16 − .04 .08 .14 .07 − .29** 1 − .12
Sex of Child (% female) 49   − .13 − .01 − .04 − .02 − .07 .08 .06 .10 − .08 − .12 1
1. *p < .05; ** p < .01