Question: How Do You Establish Discriminant Validity?

What are the 4 types of validity?

The four types of validityConstruct validity: Does the test measure the concept that it’s intended to measure?Content validity: Is the test fully representative of what it aims to measure?Face validity: Does the content of the test appear to be suitable to its aims?More items…•.

How do you use content validity?

Content validity is most often measured by relying on the knowledge of people who are familiar with the construct being measured. These subject-matter experts are usually provided with access to the measurement tool and are asked to provide feedback on how well each question measures the construct in question.

Is face validity good or bad?

Face validity, also called logical validity, is a simple form of validity where you apply a superficial and subjective assessment of whether or not your study or test measures what it is supposed to measure. … Therefore, it is often criticized as the weakest form of validity.

What is an example of discriminant validity?

Discriminant validity tests whether believed unrelated constructs are, in fact, unrelated. … Discriminant validity would ensure that, in the study, the non-overlapping factors do not overlap. For example, self esteem and intelligence should not relate (too much) in most research projects.

How do you establish convergent validity?

Convergent validity can be established if two similar constructs correspond with one another, while discriminant validity applies to two dissimilar constructs that are easily differentiated.

What validity means?

Validity is the extent to which a concept, conclusion or measurement is well-founded and likely corresponds accurately to the real world. The word “valid” is derived from the Latin validus, meaning strong.

What is an example of content validity?

For example, you might have a ten-question customer satisfaction survey with three questions that test for “overall satisfaction with phone service.” Testing those three questions for satisfaction with phone service is an example of checking for internal consistency; taking the whole survey and making sure it measures …

How do you describe discriminant validity?

Convergent validity takes two measures that are supposed to be measuring the same construct and shows that they are related. Conversely, discriminant validity shows that two measures that are not supposed to be related are in fact, unrelated. Both types of validity are a requirement for excellent construct validity.

What is a good discriminant validity score?

Although there is no standard value for discriminant validity, a result less than 0.85 suggests that discriminant validity likely exists between the two scales.

What is good convergent validity?

Convergent validity states that tests having the same or similar constructs should be highly correlated. Two methods are often applied to test convergent validity. One is to correlate the scores between two assessment tools or tools’ sub-domains that are considered to measure the same construct.

What is validity research?

Validity refers to how accurately a method measures what it is intended to measure. If research has high validity, that means it produces results that correspond to real properties, characteristics, and variations in the physical or social world. High reliability is one indicator that a measurement is valid.

How do you measure incremental validity?

The incremental validity is indicated by the change in R-square when high school GPA is included in the model. In this case, high school GPA accounts for 13% of the variance in freshman GPA and the combination of high school GPA plus SAT accounts for 20% of the variance in freshman GPA.

What is meant by face validity?

Definition. Face validity refers to the extent to which a test appears to measure what it is intended to measure. … The test items appear, at face value, to measure what one is seeking to measure.

What is face validity example?

For instance, if a test is prepared to measure whether students can perform multiplication, and the people to whom it is shown all agree that it looks like a good test of multiplication ability, this demonstrates face validity of the test. Face validity is often contrasted with content validity and construct validity.

What means content validity?

Content validity refers to the degree to which an assessment instrument is relevant to, and representative of, the targeted construct it is designed to measure.

What is criterion validity in psychology?

From Wikipedia, the free encyclopedia. In psychometrics, criterion or concrete validity is the extent to which a measure is related to an outcome. Criterion validity is often divided into concurrent and predictive validity based on the timing of measurement for the “predictor” and outcome.

What is an example of concurrent validity?

For example, an employment test may be administered to a group of workers and then the test scores can be correlated with the ratings of the workers’ supervisors taken on the same day or in the same week. The resulting correlation would be a concurrent validity coefficient.

How do you test construct validity?

Intervention studies where a group with low scores in the construct is tested, taught the construct, and then re-measured can demonstrate a test’s construct validity. If there is a significant difference pre-test and post-test, which are analyzed by statistical tests, then this may demonstrate good construct validity.

What is an example of validity?

The concept of validity was formulated by Kelly (1927, p. 14) who stated that a test is valid if it measures what it claims to measure. For example a test of intelligence should measure intelligence and not something else (such as memory).

What is face validity and why is it important?

Obviously, face validity only means that the test looks like it works. It does not mean that the test has been proven to work. However, if the measure seems to be valid at this point, researchers may investigate further in order to determine whether the test is valid and should be used in the future.

How do you test concurrent validity?

Concurrent validity is usually measured by the correlation between a new test and an existing test to demonstrate whether the new test correlates well with the existing test (Murphy & Davidshofer, 1998). Therefore, the resulting correlation is a concurrent validity coefficient.