Peformance on IQ tests has risen substantially around the world at all age levels in recent decades on account of the environmental variables. This phenomenon is known as the

Selective breeding for desirable characteristics is called . . . . . . . .

A. Chromosome

B. Genetic

C. Eugenics

D. All of the above

The most influential multifactor theory is given by

A. L.L. Thrustone

B. Alfred Binet

C. Lewis Terman

D. None of the above

A . . . . . . . . adult generally falls in the Mental Age range of $$8\frac{1}{2}$$ to 11 years.

A. Mildly retarded

B. Moderately retarded

C. Severely retarded

D. None of the above

Heritability is a technical term referring to the

A. Proportion of the variation of a trait within a population that is attributable to genetic differences between individuals in that population

B. Heredity

C. Correlation between heredity and environment

D. Potentiality of the hereditary qualities