Definition of intelligence Definition and meaning of IQ Understand what validity, reliability, and norms mean

What is intelligence?

The capacity for learning, reasoning, understanding, and similar forms of mental activity.

What does IQ stand for?

Intelligence Quotient.

How is IQ calculated?

IQ = (Mental Age / Chronological Age) × 100.

What are standardized tests used to measure IQ?

Tests like the Wechsler Adult Intelligence Scale (WAIS) or the Stanford-Binet Intelligence Scales.

What is the average IQ score?

The average IQ score is set at 100.

What does validity refer to in psychological testing?

The extent to which a test measures what it claims to measure.

What is content validity?

It refers to whether the test's content accurately represents the skills or knowledge it is supposed to cover.

What does criterion validity measure?

How the test scores correlate with other measures of the same construct.

What is reliability in the context of psychological testing?

The consistency and stability of test scores.

What is test-retest reliability?

It measures the consistency of results when a test is administered at different times.

What are norms in psychological testing?

Reference points for interpreting test scores based on the performance of a standardization sample.

What purpose do norms serve?

They allow for comparison of an individual's score against others in a similar population.

What are percentile ranks?

They indicate the percentage of individuals in the standardization sample who scored at or below a particular score.

What do standard scores do?

They convert raw scores into a standard scale with a predetermined mean and standard deviation.

What is split-half reliability?

It involves dividing a test into two halves and comparing the scores of each half.

What is construct validity?

The test accurately measures the theoretical construct or trait it is designed to measure.