AP PSYCHOLOGY

Detailed explanation-1: -Among adults, males have slightly higher verbal and reasoning abilities than females and a more pronounced superiority on spatial abilities. If the three abilities are combined to form general intelligence, the mean for males is 4 IQ points higher than the mean for females.

Detailed explanation-2: -The Flynn effect refers to a secular increase in population intelligence quotient (IQ) observed throughout the 20th century (1–4). The changes were rapid, with measured intelligence typically increasing around three IQ points per decade.

Detailed explanation-3: -General intelligence, also known as g factor, refers to a general mental ability that, according to Spearman, underlies multiple specific skills, including verbal, spatial, numerical and mechanical.

Detailed explanation-4: -The existence of the g factor was originally proposed by the English psychologist Charles Spearman in the early years of the 20th century.