When 4-year-old Aileen goes to the store with her dad and whines for candy at the checkout, she gets the candy. But when she goes with her mom, whining never ends up getting her candy. Before long, Aileen only whines when she is at the store with her dad. This is called .

Quick using the information in the graph, one might speculate that a) w.w.i created increased job opportunities in the u.s. b) the election of president hoover in 1936 caused unemployment to decline. c) the return of soldiers following w.w.ii caused unemployment to increase in the u.s. d) the new deal programs of president roosevelt created employment opportunities in the u.s.

For 50 points a crustacean is a. both a consumer and a predator b. both a predator and a prey animal c. both a producer and a predator d. prey only

Jamie is conducting a study of hyperactive children. he recruits two children identified by teachers as hyperactive and takes a detailed history by interviewing the child and the child's parents over a period of several days, looking for patterns in the child's early experiences that may have contributed to the child's hyperactivity. jamie's research plan is referred to as the