Which of the following statements about aborigines is false? a. they were nomadic hunter-gatherers. b. they lived in small groups called clans. c. they used spears, nets, and boomerangs to hunt. d. they spoke one common language and had shared religious beliefs.

D. They spoke one common language and had shared religious beliefs.

Explanation:

The Aborigines in Australia were not one single people, therefore, they did not share one common language. In fact, there were more than 200 different languages and up to three times as many dialects.

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.