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

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 Correct Answer 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

Related Questions

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The human eye is a complex part of the body that is used for seeing. Eyes enable people to perform daily tasks and to learn about the world that surrounds them. Sight, or vision, is a rapidly occurring process that involves continuous interaction between the eye, the nervous system, and the brain. When someone looks at an object, what he really sees is the light reflected from the object. This reflected light passes through the lens and falls on the retina of the eye. Here the light induces nerve impulses that travel through the optic nerve to the brain and then over other nerves to muscles and glands.
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