Table 1.
ANOVA Repeated Contrasts for Age Effects During Infancy (2–6 Months)
| Age
|
|||||
|---|---|---|---|---|---|
| Behavior | df | 2 vs. 3 Months | 3 vs. 4 Months | 4 vs. 5 Months | 5 vs. 6 Months |
| Contact | F[1,33] | 12.6, p = .001, η2 = .3 | 35.5, p <.001, η2 =.5 | 2.6, p = .11, η2 = .07 | .49, p = .5, η2 = .01 |
| 3 m | F[1,33] | 12.0, p = .001, η2 =.27 | 6.9, p =.013, η2 = .17 | .8, p = .39, η2 = .02 | .49, p =.9, η2 =.001 |
| Cradle | F[1,33] | 4.9, p =.033, η2 = .13 | 1.5, p = .22, η2 =.04 | 1.6, p = .21, η2 = .05 | .32, p =.58, η2 = .01 |
| Carry | F[1,33] | 8.11, p = .008, η2 =.19 | .06, p = .8, η2 = .002 | 1.86, p =.18, η2 =.05 | 1.4, p =.25, η2 = .04 |
| Restrain | F[1,33] | 5.4, p =.026, η2 = .14 | 3.7, p = .06, η2 =.10 | 7.2, p = .011, η2 =.18 | 3.4, p =.08, η2 = .09 |
| Mom followf | F[1,33] | 4.67, p = .038, η2 =.12 | .30, p = .56, η2 =.01 | 2.6, p = .12, η2 = .07 | 1.42, p = .24, η2 =.04 |
| Mom followd | F[1,33] | 5.4, p =.027, η2 = .14 | 3.4, p = .08, η2 =.09 | .37, p = .55, η2 = .01 | 1.2, p =.29, η2 = .03 |
| Infant followf | F[1,33] | 6.39, p = .016, η2 = .2 | 5.78, p =.02, η2 = .2 | .05, p = .8, η2 = .001 | 1.73, p = .19, η2 =.05 |
| Infant followd | F[1,33] | 9.51, p = .004, η2 =.22 | 2.75, p = .10, η2 = .08 | 2.20, p =.14, η2 =.06 | 2.31, p = .13, η2 =.07 |
| Retrieve | F[1,33] | 3.32, p = .07, η2 = .09 | 14.7, p = .001, η2 =.3 | 1.93, p = .2, η2 = .06 | 6.05, p = .02, η2 =.16 |
| Touch | F[1,33] | .08, p = .8, η2 = .002 | 18.9, p <.001, η2 = .36 | 5.6, p = .02, η2 = .15 | 1.1, p =.31, η2 = .03 |
| Kidnapf | F[1,33] | .03, p = .9, η2 = .001 | 8.08, p = .008, η2 =.2 | .84, p =.4, η2 = .03 | 2.24, p = .14, η2 =.06 |
Repeated contrasts results for a significant main effect of Age from 2 to 6 months.
f
Indicates the frequency of behavior, whereas
d
indicates the duration of the same behavior.