(PART 2) Myer's AP Psychology Unit 2 (4th Edition)

achievement test

a test designed to assess what a person has learned.

aptitude test

a test designed to predict a person’s future performance; aptitude is the capacity to learn.

mental age

a measure of intelligence test performance devised by Binet; the level of performance typically associated with children of a certain chronological age. Thus, a child who does as well as an average 8-year-old is said to have a mental age of 8.

Stanford-Binet

the widely used American revision (by Terman at Stanford University) of Binet’s original intelligence test. 

intelligence quotient (IQ)

defined originally as the ratio of mental age (ma) to chronological age (ca) multiplied by 100 (thus, IQ = ma/ca × 100). On contemporary intelligence tests, the average performance for a given age is assigned a score of 100.

Wechsler Adult Intelligence Scale (WAIS)

the WAIS and its companion versions for children are the most widely used intelligence tests; they contain verbal and performance (nonverbal) subtests.

psychometric

the scientific study of the measurement of human abilities, attitudes, and traits.

standardization 

defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group.

normal curve

a symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (about 68 percent fall within one standard deviation of it) and fewer and fewer scores lie near the extremes. (Also called a normal distribution.)

Flynn effect

the rise in intelligence test performance over time and across cultures.

reliability

the extent to which a test yields consistent results, as assessed by the consistency of scores on two halves of the test, on alternative forms of the test, or on retesting.

validity

the extent to which a test or experiment measures or predicts what it is supposed to. (See also predictive validity.)

content validity

the extent to which a test samples the behavior that is of interest.

construct validity

how much a test measures a concept or trait.

predictive validity

the success with which a test predicts the behavior it is designed to predict; it is assessed by computing the correlation between test scores and the criterion behavior. (Also called criterion-related validity.)

cross-sectional study 

multiple groups at once

longitudinal study

same group over time

cohort

a group of people sharing a common characteristic, such as from a given time period.

growth mindset

a focus on learning and growing rather than viewing abilities as fixed.

fixed mindset

the view that intelligence, abilities, and talents are unchangeable, even with effort.

stereotype threat

a self-confirming concern that one will be evaluated based on a negative stereotype.