Psychologists use ________ to assess individuals' mental aptitudes and compare them with those of others,using numerical scores.

A) eugenics
B) reliability coefficients
C) intelligence tests
D) the g factor

Psychologists use intelligence tests to assess individuals' mental aptitudes and compare them with those of others, using numerical scores. Eugenics is a discredited ideology that presumably aims to improve the genetic quality of humankind. Reliability coefficients pertain to the consistency of test scores, while the g-factor refers to the general intelligence factor that underlies many different cognitive abilities.