Describe the types of evidence that support the proposition that alteration of p

Reliability of Measurement:
-Test-retest reliability: est. whether a sample gives a consistent pattern of scores at more than one testing

-Interrater reliability: est. whether two observers give consistent ratings of a sample of targets

-Internal reliability: est. when a sample of people answer a set of similarly worded items in a consistent way

-Measurement reliability: is necessary but not sufficient for measurement validity

Validity of Measurement:
-Measurement validity: can be est. with subjective judgments (face and content validity) or with empirical data

-Face validity: the extent that it appears to experts to be a plausible measure of the variable in question

-Content validity: a measure must capture all parts of a defined construct

-Empirically derived validity: tests include criterion validity as well as convergent and discriminant validity

- Criterion validity: requires showing that can operationalization is correlated with outcomes that it should correlate with, according to the understanding of the construct

-Convergent and Discriminant validity: require showing that a measure is correlated in a pattern--more strongly with measures of similar constructs than measures of dissimilar constructs