What is Validity in Measurement?
Validity refers to the extent to which a measurement instrument or method measures what it is supposed to measure. In other words, it is the degree to which a test or questionnaire actually measures the construct or trait that it is designed to measure.
There are several types of validity, including:
1. Construct validity: This refers to whether a test or questionnaire measures the underlying concept or construct that it is supposed to measure. For example, a test of intelligence should measure intelligence, not just memory or attention.
2. Face validity: This refers to whether a test or questionnaire appears to measure the construct or trait that it is supposed to measure based on its content and format. For example, a test of physical fitness that includes questions about exercise habits and body composition may have face validity as a measure of physical fitness.
3. Content validity: This refers to whether a test or questionnaire includes items that are relevant to the construct or trait that it is supposed to measure. For example, a test of language proficiency should include items that assess the ability to speak, read, and write in the target language.
4. Criterion-related validity: This refers to whether a test or questionnaire is related to other measures of the same construct or trait. For example, a test of intelligence should be related to academic achievement and job performance.
5. Convergent validity: This refers to whether a test or questionnaire is related to other measures of similar constructs or traits. For example, a test of extraversion should be related to measures of sociability and assertiveness.
6. Discriminant validity: This refers to whether a test or questionnaire is distinct from other measures of different constructs or traits. For example, a test of intelligence should not be highly correlated with measures of creativity or emotional intelligence.
In summary, validity is the extent to which a measurement instrument or method measures what it is supposed to measure, and there are several types of validity that can be considered when evaluating the quality of a test or questionnaire.
I like this
I dislike this
Report a content error
Share
