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Exam 3: Conceptualization and Measurement

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Comparison with external sources is sometimes called criterion (or external) validity.

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Cronbach α values of .70 or higher are acceptable.

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We should develop scales that are incomplete, ambiguous, or overlapping in some way.

Measurement validity simply means that something measures or reflects what it is intended to.

The first step of concept measurement is operationalization.

Ill-defined categories are problematic for constructing scales.

Likert-type scales are a common type of continuous scale.

Ordinal-level variables are usually considered to be continuous variables.

In conceptualization, no correct number of dimensions or variables exists, only bad or lacking ones.

Face validity means that index variables encompass a broad range of aspects.

Cronbach α (also called α or measure α) is a statistical measure of internal validity.

Conceptualization is the practice of identifying different dimensions of a concept.

Variables are empirical, whereas concepts are abstract.

The theorem of the interchangeability of indicators states that most concepts have three to five dimensions.

An index variable is a variable that combines the values of other variables into a single indicator or score.

Variables are abstract ideas that are observed indirectly, through concepts.

Analysts are expected to use some strategy to assess measurement validity.

Analysts must justify their choices about the conceptualization and operationalization of study concepts.

When one measurement variable has a missing value for an observation, a value of 0 is assigned to the index variable for that observation.

The term measurement variable refers to the (observed) variables that make up the index.