Jim and his father are watching the ball game on television. Jim’s father starts to yawn and Jim soon follows. This is an example of ____

Neurons that are at rest are still electrically charged

Indicate whether the statement is true or false.

According to the article Deep Roots about fetal precursors of temperament, strictly speaking, in a correlational study, one of the variables will be called:

(a) an independent variable (b) a dependent variable (c) a subject variable (d) a causal variable