Relibility Validity Dissertation

In the current psychometric examination, results revealed strong support for both the temporal stability and construct validity of the SPIN, suggesting it is an appropriate screening measure for the assessment of social phobia in adolescents.

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Some qualitative researchers reject the concept of validity due to the constructivist viewpoint that reality is unique to the individual, and cannot be generalized.

These researchers argue for a different standard for judging research quality.

Social phobia and social anxiety are highly prevalent psychological conditions in children and adolescents.

Due to the known risks associated with the spectrum of social anxiety in youth, early detection with valid and reliable assessment measures is imperative.

Second, validity is more important than reliability.

Using the above example, college admissions may consider the SAT a reliable test, but not necessarily a valid measure of other quantities colleges seek, such as leadership capability, altruism, and civic involvement.

Recall that a sample should be an accurate representation of a population, because the total population may not be available.

An instrument that is externally valid helps obtain population generalizability, or the degree to which a sample represents the population.

It is rare, if nearly impossible, that an instrument be 100% valid, so validity is generally measured in degrees.

As a process, validation involves collecting and analyzing data to assess the accuracy of an instrument.

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