Michael said, "My friend is very smart and he is more helpful than I am." Tammy said, "My friend has a fast bike." Michael is most likely ________ than Tammy

When you ask your teacher how the class did on the test, all you are told is that the results can be described by a bell-shaped curve, or normal distribution. From this, you should be able to deduce that most student scores

a. were very high. b. were very low. c. clustered in the middle and fewer were at the extremes. d. clustered at the extremes and fewer were in the middle.

Five-year-old Stefan uses symbols to represent sensorimotor discoveries. However, his thinking lacks logic. Stefan is in Piaget's __________ stage of development

A) sensorimotor B) preoperational C) concrete operational D) formal operational