TABLE 7.

Standard linear regression model for the unpredictability of maternal sensory signals (n = 123).

	β	R2 (adj)	ΔR2
Step 1		0.019	0.052
Education
Low vs. high	−0.064
Middle vs. high	0.167
Monthly income	−0.084
Maternal age	−0.037
Step 2		0.041	0.036
Education
Low vs. high	−0.072
Middle vs. high	0.175
Monthly income	−0.006
Maternal age	−0.002
Pre- and postnatal anxiety mean	0.079
Activation control	−0.150
Step 3		0.091*	0.055**
Education
Low vs. high	−0.068
Middle vs. high	−162
Monthly income	−0.042
Maternal age	−0.104
Pre- and postnatal anxiety mean	1.182**
Activation control	0.049
Pre- and postnatal anxiety mean * activation control	−1.074**

*p < 0.05, **p < 0.01.