Table 5.
Steps and variables | R | Adjusted R2 | β | F change |
---|---|---|---|---|
Step 1 (df 4/67) | .53** | .28 | ||
RJA 9 months | .30** | |||
IJA 9 months | .07 | |||
RJA 12 months | .13 | |||
IJA 18 months | .31* | |||
Step 2 (df 5/66) | .57** | .32 | 5.81** | |
RJA 9 months | .31** | |||
IJA 9 months | .10 | |||
RJA 12 months | .06 | |||
IJA 18 months | .30** | |||
Bayley MDI 12 months | .23* | |||
Step 3 (df 6/65) | .63** | .39 | 6.45** | |
RJA 9 months | .22* | |||
IJA 9 months | .07 | |||
RJA 12 months | .07 | |||
IJA 18 months | .24* | |||
Bayley MDI 12 months | .06 | |||
Bayley MDI 18 months | .33** |
Note. IJA = initiating joint attention; MDI = Mental Developmental Index; RJA = responding to joint attention.
p < .05;
p < .025.