Examlex
What are the two major problems facing the health care system of the United States?
Internal Validity
The extent to which a study can rule out or make unlikely alternative explanations of the results, indicating that the causal relationship being tested is trustworthy.
Construct Validity
The degree to which a test or instrument accurately measures the theoretical construct it is intended to measure.
Low Construct Validity
When a test or tool does not accurately measure the theoretical concept it is intended to measure.
Operational Definition
A clear, precise description of how variables in a study will be measured or manipulated, making research findings replicable and understandable.
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