Table 4.

Summary of Hierarchical Regression Analyses for Switch Reaction Time and Accuracy.

	Homogeneous		Non-switch		Switch		Global switch cost		Local switch cost
Model and variable	ΔR2	β	ΔR2	β	ΔR2	β	ΔR2	β	ΔR2	β
REACTION TIME
Step 1	0.034**		0.022**		0.016**		0.016*		0.009*
Age		−0.140**		−0.011		0.021		0.045		0.037
Sex		0.054		−0.014		−0.053		−0.053		−0.090
Pubertal timing		−0.064		−0.142**		−0.125*		−0.132*
Step 2	0.029**		0.004		0.011*		0.019*		0.015**
Aerobic fitness		−0.194**		0.071		0.117*		0.156**		0.139**
ACCURACY
Step 1	0.047**		0.035**		0.047**		0.018**		0.005
Age		0.191**		0.189**		0.217**		−0.117**		−0.059
Sex		−0.124**		−0.032		−0.011		−0.052		−0.032
Step 2	0.004		0.043**		0.047**		0.042**		0.001
Aerobic fitness		0.069		0.234**		0.244**		−0.232**		−0.033

Only significant predictor variables included in the models.

^*p < 0.05.

^**p < 0.01.