A researcher goes to great lengths to ensure that the proportion of males and females in his study matches the proportion of males and females nationally. He is selecting a ______ sample

Based on IQ score as described by Stern, a student with an IQ score of 120 is likely to answer IQ test questions like someone who is age _____, even though the student is _____

A) 10; 12 B) 12; 11 C) 10; 8 D) 12; 10

Your neighbor has a 5-year-old son. He has been taking him to story time at the library, but his son is having a very difficult time sitting still even for ten minutes. What would you tell him about his son's brain development?

He should be able to sit through the entire story time once what brain structure develops more fully? a. reticular formation b. hippocampus c. corpus callosum d. cerebellum