Measurement Validity

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Introduction

an empirical measure of validity adequately reflects the meaning of the concept under consideration. When considering the issue of conceptualization, it is more difficult to demonstrate that individual measures are valid. For example, face validity offers empirical measures that may or may not jibe with common agreements and individual mental images about a particular concept. Criterion-related validity relies on comparing a measure with some external criterion. Measures can be validated by showing that it predicts scores on another measure that is generally accepted as valid. With discriminant validity, the measure of a concept is different from measures of similar but distinct concepts. Conceptual definitions offer a working definition specifically assigned to a term. This specification of conceptual definitions does two important things. It serves as a specific working definition presented so readers understand the concept and focuses observational strategy. It is operational definitions that spell out precisely how the concept will be measured; a description of the operations undertaken in measuring a concept.

In your main post:

  1. Develop a narrowly focused concept, such as poverty, depression, or social support to test its validity.
  2. Explain your chosen concept.
  3. Identify three empirical research articles using a library search to find the most valid measure of your chosen concept.
  4. Summarize your findings based on your empirical research.
  5. Explore how valid the measure is and the basis for your rating of validity.

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