No main effects are aliased with any other main effect or 2-factor interactions, but 2-factor interactions are aliased with each other. 所有的主效果都不与其他主效果相叠加，也不与两因子交互作用相叠加，但是两因子交互作用间互相叠加。
The covariance analysis with verbal scores controlled reveals that verbal ability has a significant effect on ToM, but peer status has no independent effect on ToM. 控制言语后的协方差分析表明，言语对心理理论的表现有显著主效应，但同伴地位对心理理论表现的主效应不再显著。
