Measurement in Scientific Research

These flashcards cover key vocabulary terms related to measurement reliability and validity as discussed in the lecture.

Reliability

The consistency of a measure, or the degree to which repeated measurements produce the same results.

Validity

The accuracy of a measure, or how well a test measures what it claims to measure.

Inter-rater reliability

The degree to which different judges or raters agree in their assessments of a particular variable.

Test-retest reliability

The extent to which a measure produces stable results over time when measured again.

Internal consistency

The degree to which different items on the same test correlate with one another.

Cronbach's alpha

A statistic used to assess the internal consistency of a measure, typically a value of 0.8 or greater is considered good.

Face validity

The extent to which a measure appears to measure the construct of interest on the surface.

Content validity

The degree to which test items cover the entire construct being measured.

Predictive validity

The extent to which a measure is able to predict future outcomes related to the construct.

Convergent validity

The degree to which a measure correlates with other measures of similar constructs.

Discriminant validity

The degree to which a measure does not correlate with measures of different constructs.