Dr. Ahmed's current study is investigating Internet use by young adolescents in the United
States. He is concerned with the generalizability of his results. Dr. Ahmed should
a. publish his results as quickly as possible.
b. include boys in his sample as they are the prime internet users.
c. include a wide range of young teens of both genders, many ethnic groupsand economic levels.
d. change his focus to all adolescents.
c. include a wide range of young teens of both genders, many ethnic groups and economic
levels.
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The strength and direction of a relationship between two factors is represented by a
statistic called a(n): a. empirical coefficient b. experiment coefficient c. correlation coefficient d. causal coefficient
Which concept emphasizes development resulting from ongoing bidirectional exchanges between heredity and all levels of the environment?
A) gene?environment interaction B) gene?environment correlation C) epigenesis D) niche-picking