Question

Given below are two statements

Statement I: Reliability is a necessary but insufficient condition for the validity aspect of a research tool

Statement II: Validity is threatened when a test measures only the construct it is designed to measure in a research

In light of the above statements, choose the most appropriate answer from the options given below

1.  Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct

Answer 1

Correct Answer - Option 3 : Statement I is correct but Statement II is incorrect

Reliability in research:

• The consistency of a research instrument or the process of measurement
• Reliability is a necessary but insufficient condition for the validity aspect of a research tool
• Stability, equivalence, and consistency are three basic principles of reliability
• It can be classified into two
  • Internal consistency: establishing causal relationships as distinguished from the spurious relationship
  • External consistency: establish the domain to which findings can be generalized

The validity of research:

• It refers to the accuracy of an instrument or the process of measuring
• A test has construct validity if it accurately measures a theoretical, non-observable construct or trait. The construct validity of a test is worked out over a period of time on the basis of an accumulation of evidence. There are a number of ways to establish construct validity.
• Thus Validity is not threatened when a test measures only the construct it is designed to measure in a research

Therefore, Statement I is correct but Statement II is incorrect