Demetrius, a 10-year-old, is taking the original Stanford-Binet intelligence test. If he consistently answers questions correctly at the level of a 12-year-old, then according to Wilhelm Stern's original scoring method, Demetrius's intelligence quotient is:

a. 100.
b. 120.
c. 80.
d. 110.

b. 120.

Explanation:

Intelligence test is defined as a psychological test that is prepared to determine the mental capacity to make abstractions, to learn, and to deal with novel situations.

In other words, it is a test that is desgined to measure level of intelligence.

Scores may be presented as an IQ (intelligence quotient), as a mental age, or on a scale.

Hence,Wechsler intelligence tests which was developed by a clinical psychologist David Wechsler are a widely used series of intelligence tests, designed to examine specific and overall cognitive capabilities and is individually administered to young kids, adolescents and adults between ages 6-89.

Hence, the IQ was originally calculated as the ratio of a person’s mental age to his chronological (physical) age, multiplied by 100.

In this case, Demetrius age is 10 years, and has a mental age of 12years ( this means that, he performed on the test at the level of an average 12-year-old),  then the IQ is measured as 12/10 * 100 = 120

Hence, answer is 120.

i disagree that there is little difference between adult female development and adult male development. sociological studies comparing female and male pathways to adulthood, revelead that there are sustancial differences between them. particularly, female and male differ from timing of marriage, when they began to live with children and the likelihood of combining wife/husband and parent roles.