AP PSYCHOLOGY

Detailed explanation-1: -On average, IQ test scores worldwide have been increasing over time: younger generations perform better than older generations. Per generation, the average IQ test scores increase by 10 points. This is called the Flynn effect, after the researcher who first documented this phenomenon.

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: -Raw scores on IQ tests for many populations have been rising at an average rate that scales to three IQ points per decade since the early 20th century, a phenomenon called the Flynn effect. Investigation of different patterns of increases in subtest scores can also inform current research on human intelligence.

Detailed explanation-4: -The “Flynn effect” refers to the observed rise over time in standardized intelligence test scores, documented by Flynn (1984a) in a study on intelligence quotient (IQ) score gains in the standardization samples of successive versions of Stanford-Binet and Wechsler intelligence tests.

Detailed explanation-5: -View this answer. The correct answer is d) The observation that the mean standardized IQ score has risen since 1932. The Flynn Effect demonstrates that the average of the IQ scores will change as varying generations have different thresholds for what intelligence is necessary.