AP PSYCHOLOGY

Detailed explanation-1: -Validity refers to the extent that the instrument measures what it was designed to measure. In research, there are three ways to approach validity and they include content validity, construct validity, and criterion-related validity.

Detailed explanation-2: -Validity is often defined as the extent to which an instrument measures what it asserts to measure [Blumberg et al., 2005]. Validity of a research instrument assesses the extent to which the instrument measures what it is designed to measure (Robson, 2011). It is the degree to which the results are truthful.

Detailed explanation-3: -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.

Detailed explanation-4: -Validity is the most important issue in selecting a test. Validity refers to what characteristic the test measures and how well the test measures that characteristic.

Detailed explanation-5: -Construct validity is established by determining if the scores recorded by an instrument are meaningful, significant, useful, and have a purpose. In order to determine if construct validity has been achieved, the scores need to be assessed statistically and practically.