In Dr. Lu's study of eating disorders, she looked at the academic histories of girls with an eating disorder and girls who did not have such problems. In this example, the girls without eating disorders are the ________ group

The defining feature of Tourette's disorder is:

a) the presence of vocal or motor tics. b) an irresistible urge to steal objects that are not needed. c) an irresistible urge to set fires just for the joy of seeing them burn. d) an unusual lack of interest in relationships with other people.

At school, Carl falls down the stairs and badly sprains his ankle. When will Carl most likely receive help?

a) Between class periods when the halls are filled with students rushing to class. b) After the last class period of the day as students are getting ready to go home. c) During lunch hour when only a few students are in the hallway. d) Before school starts when only one other student is in the hallway.