The discovery that there are three kinds of cones, each with a different absorption spectrum, supports the __________ or trichromatic theory of color vision

Children with conduct problems who later develop the symptoms of antisocial personality

disorder tend to a. perceive their environment as being hostile and threatening. b. be latch-key children, who are unsupervised after school lets out for the day. c. engage in sexual fantasies more than "normal" children. d. be responsive only to promises or threats that involve money. e. develop friendships with many children but lasting friendships with only a few.

Four-year-old Jasmine is shown two identical tall glasses of water and agrees that they contain the same amount of liquid

When the liquid is poured into a short, wide container, she says that there is more water in the shorter container because it is "all spread out." Jasmine is demonstrating a lack of understanding of A) conservation. B) animistic thinking. C) magical thinking. D) reversibility.