Kaye has just mastered sitting up without support. About how old would you expect Kaye to be?

Calista is devising a questionnaire to predict which female elementary school students are apt to reach puberty early. Which item should NOT appear on her scale?

A) Is this child overweight? B) Is this child experiencing a good deal of family stress? C) Was this child's mom an early developer? D) Is this child advanced academically?

Early rearing of animals in enriched environments

a. changes the brain in unpredictable ways. b. has no discernible effects on the brain. c. causes brain tissues to atrophy and degenerate. d. improves the size and connectedness of the brain.