The parental care Model hypothesizes that endothermy is arisen as a consequence of selection for parental care because endothermy enables a parent to control incubation temperature.
双亲行为模型是指在鸟兽类中，内温性是对双亲行为选择的结果，因为内温性为双亲控制抚育温度提供了保证。
They also asked detailed questions about factors that might influence IQ, such as child care, income and parental education. They then subtracted those factors using a statistical model. Dr.
他们还针对可能影响智商的因素提出了详细的问题，比如儿童保育、家庭收入及父母的教育程度等，然后利用统计模型剔除这些因素。
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