The treatment for _____ usually involves wearing a facemask device that forces air into the lungs during sleep

Isaac and Larry, two young brothers, are sitting at the breakfast table when their father gives them both a glass of chocolate milk. Isaac's glass is taller but thinner than Larry's glass, which is shorter but wider. Larry gets upset and complains that "Isaac got more milk!" The fact that Larry is only focusing on one feature of his milk glass demonstrates the Piagetian concept of a

accommodation. b. egocentrism. c. reversion. d. centration.

The college admissions office has determined that the correlation between IQ scores and college grade point average is .50 . What percent of the variation in college grades is accounted for by knowing IQ scores?

a. 10 percent b. 15 percent c. 25 percent d. 50 percent