A variable whose levels are categories
Categorical variable
Concurrent validity
An emperically supported type of measurement validitythat represents the extent to which a measure is related to a concrete, simultaneous outcome that it should be related to.
The extent to which a measure captures all parts of a defined construct.
Content validity
An emperically supported type of measurement validity that represents the extent to which a measure is associated with other measures of a theoretically similar construct
Convergent validity
a number from -1 to 1 used to indicate the strength and direction of an association
Correlation coefficient, r
Cronebach’s alpha
a correlation-based statistic that measures a scale’s internal reliability
An empirically supported type of measurement validity that representsthe extent to which a measure does not associate strongly with measures of other, theoretically different constructs.
Discriminant validity
The extent to which a measure is subjectivelyconsidered a plausible operationalization of the conceptual variable in question
Face validity
Internal reliability
In a measuring instrument that contains multiple items, the consistency in pattern of answers no matter how the question is phrased
A quantitative measurement scale that has no true zero and in which numbers are equally spaced.
Interval scale
Observational measure
A variable whose values can be recorded as meaningful numbers
Ordinal scale
A quantitative measurement scale with levels representing a ranked order. It is unclear the distance between variables
A variable measured by recording biological data
Physiological measure
Predictive validity
An empreically supported type of measurement validitythat represents the extent to which a measure is related to a concrete, future outcome that it should be related to
Quantatative variable
A variable that can be recorded in numbers
A quantitative scale in which the numerals have equal intervals and a true zero
Ratio scale
consistency of a measure
reliability
A method of measuring a variable in which people answer questions about themselves in a questionare or interview
self-report method
A description of an association including how closely the data points in a scatterplot cluster along a line of best fit.
strength
the consistency in results every time a measure is used
Test-retest reliability