Which of the following skills is NOT an accomplishment of the concrete operational stage?

Which of the following is most likely to be a title for a research study in the field of positive psychology?

a) "What Causes Aggression?" b) "The Factors Underlying Schizophrenia" c) "What Makes a Marriage Work?" d) "Contributing Factors to Alcoholism"

Troy is 12 months old and loves to eat goldfish crackers. While sitting in the kitchen he sees a bag of goldfish crackers

When his actions become intentional and goal directed, and he actively moves, reaches for, and grasps the bag of crackers, it is clear that he is in the sensorimotor substage ______________. a. 4: coordination of secondary schemes b. 3: secondary circular reactions c. 2: first habits and primary circular reactions d. 1: simple reflexes