Why does russia have on the of the largest overall gdps in the world? a. the judicial system enforces a strong protection of property rights. b. russia has encouraged increased public and private investment in fixed capital. c. the country contains nearly one-third of the planet's natural resources. d. the government has placed a high priority on developing human capital.

answer; (b) capitalism;

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.