In the later stages of preoperational stage, children show an understanding that certain things stay the same, regardless of changes in shape, size, and appearance. This is called

What is an advantage of meta-analysis?

a) Can examine variables that were not a focus of the original research b) Can examine the relations between measures c) Can compare the validity of different investigations d) Can examine the clinical significance of investigations

Identify the area of the brain responsible for inhibiting impulsive behavior and

maintaining self-control. a. reticular formation c. hippocampus b. prefrontal cortex d. left hemisphere