Intelligence testing in class exercise

Ratio IQ method

A method of calculating IQ based on the ratio of a person's mental age to their chronological age.

Cattell

Credited with dividing Spearman's 'g' into 'gf' (fluid intelligence) and 'gc' (crystallized intelligence).

WISC

Wechsler Intelligence Scale for Children, a standardized test that measures a child's intellectual ability.

Verbal Comprehension Index

Part of the WISC that includes subtests such as Similarities, Vocabulary, and Comprehension.

Scaled score mean

On the WISC, each subtest has a scaled score mean of 10 and a standard deviation of 3.

Composite mean score

On the WISC, each index has a composite mean score of 100 and a standard deviation of 15.

Jangle fallacy

The error of assuming that two measures are different when they are actually measuring the same construct.

Practical intelligence

In Sternberg's theory, it is also referred to as contextual intelligence.

Thurstone

Questioned the importance of Spearman's 'g', asserting that there are 7 broad factors of intelligence.

WISC subtests for long-term memory

Vocabulary and Information are the two WISC subtests that provide a good index of long-term memory.

Fluid intelligence (gf)

The ability to solve new problems, use logic in new situations, and identify patterns.

Crystallized intelligence (gc)

The ability to use learned knowledge and experience.

Subtest

A smaller component of a larger test that measures a specific skill or ability.

Standard deviation

A measure of the amount of variation or dispersion in a set of values.

Mental age

An estimate of the age at which a child is functioning intellectually.

Chronological age

The actual age of a person in years.

Index score

A score that summarizes performance across a set of related subtests.

Achievement

The knowledge and skills a person has acquired, typically measured by tests.

Aptitude

A person's potential to learn or perform in a specific area.