Charles Spearman suggested the __________ factor to account for specific intellectual abilities

Relatively small, tightly-knit groups of friends who spend considerable time exclusively with each other are known as:

A) cliques. B) clubs. C) crowds. D) subcultures.

Of the following, the most common chromosomal abnormality linked to intellectual developmental disorder is ______

a. Klinefelter's syndrome c. Down syndrome b. Turner's syndrome d. Reye's syndrome