Validity - CAS

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Research Skills for Psychology Majors: Everything You Need to Know to Get StartedValidityValidity, the deeper and more complicated twin of Reliability, is outlined in a cursory manner in this chapter. Validity is indeed a complex topic, so for a more complete treatment of the subject an advanced methods book should be consulted. You may have this opportunity in a later , like reliability, takes many forms and perhaps the term is used too broadly. Generally, Validity is used in two contexts: (1) evaluating the quality of a measure-ment instrument or method (a true twin of reliability); and (2) evaluating the qual-ity of a research study, especially an experiment (maybe a cousin).

concern in research: internal validity and external validity. Internal validity con-cerns the meaning of the observed relationships between variables, i.e., can we be certain that the relationship we see is really what we think it is. External validity

  Internal, External, Validity, External validity, Internal validity, Internal validity and external validity