rick has been distressed over a long period of time. he has had problems coping with life and relating to people. he tries to avoid meeting people, as he thinks his breathing can be dangerous for others. he also believes that washing his face seven times an hour will keep him healthy. rick meets all the criteria for abnormal behavior, which is defined as involving

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

answer; shays rebellion;

answer; unimodal and symmetrical;