Ch 7 in class notes part 1

the quantifiable characteristics of a test that reflect its consistency and accuracy.

what are some examples of psychometric properties

result from a test in which the score can be any value within a particular continuum.

can only be counted and involve integers. Follow a particular order

data that can only have two categories

individuals respond to a range of responses (e.g., “strongly disagree” to “strongly agree,” or “never” to “always”).

a client’s scores are compared with those of other individuals.

(e.g., Functional Independence Measure) is based on a standard established by experts; the individual is then tested to determine how their performance compares with the established benchmark.

describes the stability of a test score and is measured with a reliability coefficient.

is the difference between a true score and an individual’s actual score.

Measurement error is ____ in a reliable test.

occurs when there is a discrepancy between an individual’s true potential test score and his or her actual test score due to an aspect of the testing situation or the test itself.

occurs when aspects of the test taker, such as fatigue or poor test-taking skills, interfere with his or her true score.

provides an estimate of the stability of a test over time

measures test-retest and inter-rater reliability.

assesses inter-rate reliability for a categorical measure

refers to the unity or similarity of items on a multi-item measure.

Internal consistency is often measured using ______________________

a test’s ability to measure what it is intended to measure.

A classic method for examining _____________________ is to correlate the scores of the index measure with an established gold standard.

is used to predict scores on another measure.

is used to find evidence that the new measure is similar to; a measure of the same construct.

The process of examining validity is described as ______________.

a valid measure should be able to discriminate between two groups, a process described as ____________

examines the accuracy of a measure in determining future performance

is the ability of a test to detect a condition when it is present (aka, true positive).

High sensitivity, a negative test indicates

is the ability of a test to avoid detecting a condition when it does not exist (aka, true negative).

High specificity, a positive test result means

an abnormality is induced through a manipulation that provokes the condition.