Validity refers to the degree to which an instrument measures what it is supposed to measure. It ensures that the results and conclusions drawn from research are accurate and reflect the true nature of the phenomenon being studied.
Types of Validity
Content Validity: This ensures that the test covers all aspects of the construct being measured. Construct Validity: This type assesses whether the test truly measures the theoretical construct it claims to measure. Criterion-Related Validity: This evaluates how well one measure predicts an outcome based on another measure.