Table 9.

Hierarchical Regression Models Testing the Effect of Degree of English Language Dominance on Code-Switching, Controlling for Expressive Vocabulary (N = 34)

Predictor	ΔR2	β
Model 1: Predicting frequency of CS during English conversations at 2;6 years
Step 1	.21**
English EOWPVT		−.45**
Step 2	.42***
English EOWPVT		.33
Degree of English dominance		−1.02***
Total R2	.63***
Model 2: Predicting frequency of CS during English conversations at 3;6 years
Step 1	.18**
English EOWPVT		−.43**
Step 2	.12*
English EOWPVT		−.08
Degree of English dominance		−.49*
Total R2	.30**
Model 3: Predicting frequency of CS during Spanish conversations at 2;6 years
Step 1	.20**
Spanish EOWPVT		−.45**
Step 2	.34***
Spanish EOWPVT		.03
Degree of English dominance		.76***
Total R2	.54***
Model 4: Predicting frequency of CS during Spanish conversations at 3;6 years
Step 1	.51***
Spanish EOWPVT		−.71***
Step 2	.19***
Spanish EOWPVT		−.26
Degree of English dominance		.62***
Total R2	.69***

Note. CS = code-switching.

^*p < .05.

^**p < .01.

^***p < .001