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The Solomon four group design is viewed as the purest of research design.
Anxiety
A feeling of worry, nervousness, or unease about something with an uncertain outcome.
Reliability
The degree to which the result of a measurement, calculation, or specification can be depended on to be accurate.
Construct Validity
Evidence that a test measures a specific concept or trait. Construct validity includes an analysis of a test through one or more of the following methods: experimental design, factor analysis, convergence with other instruments, and/or discrimination with other measures.
Factor Analysis Validity
A statistical method used to examine whether a set of survey or test items correlates with underlying constructs, thereby validating the measure's theoretical assumptions.
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