PSYCH ASS (RELIABILITY)

QUIZMENT7

RELIABILITY

The consistency of a measure or assessment tool, indicating how stable and dependable the results are over time or across different situations.

CHARLES SPEARMAN

British psychologist who contributed with the advancement of reliability assessment and published his work in 1904 article entitled The Proof and Measurement of Association between Two Things.

ABRAHAM DE MOIVRE

Introduced the basic notion of sampling error.

KARL PEARSON

Developed the product moment correlation.

CLASSICAL TEST SCORE THEORY

Assumed that each person has a true score that would be obtained if there were no error in measurement.

THE DOMAIN SAMPLING MODEL

This model considers the problems created by using a limited number of items to represent a larger and more complicated construct.

ITEM RESPONSE THEORY

The computer is used to focus on the range of item difficulty that helps assess the individual’s ability.

Eg: If a person gets several easy items correct, the computer might quickly move to more difficult items. If the person get several difficult items wrong, the computer moves to the easier items

TEST-RETEST RELIABILITY

Estimates are used to evaluate error associated with administering a test at two different times. This type of analysis is of value only when we measure “traits” or characteristics that do not change over time.

CARRYOVER EFFECT

Occurs when the first testing influences the scores from the second session

PARALLEL FORM RELIABILITY

Compares two equivalent forms of a test that measure some attribute.

• The two forms use different items; However, the rules used to select items of a particular difficulty level are the same.

SPLIT HALF METHOD

A test is given and divided into halves that are scored separately

KR20 (KUDER RICHARDSON TECHNIQUE)

Is a statistical measure used to assess the internal consistency reliability of tests where each question has two possible answers: correct or incorrect.

PURE SPEED TEST

One in which individual difference depended entirely on speed of performance.

PURE POWER TEST

A type of assessment that allows examinees sufficient time to attempt all items, ensuring they can express their true level of knowledge or ability.

COEFFICIENT ALPHA (CRONBACH’S ALPHA)

This measures the internal consistency reliability of a scale or test, indicating how closely related a set of items are as a group. Values range from 0 to 1, with higher values indicating greater reliability and consistency among test items.