External validity is related to generalizing. That's the major thing you need to keep in mind. Recall that validity refers to the approximate truth of propositions, inferences, or conclusions. So, external validity refers to the approximate truth of conclusions the involve generalizations.
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External validity - Wikipedia, the free encyclopedia
External validity is the validity of generalized (causal) inferences in scientific studies, usually based on experiments as experimental validity. Inferences about cause-effect relationships based on...
en.wikipedia.org/wiki/External_validity
Threats to External Validity ... External validity involves the extent to which the results of a study can be generalized (applied) beyond the sample. In other words, can you apply what you found in your study to other people (population validity) or settings (ecological validity).
www.gifted.uconn.edu/siegle/research/Samples/externalva... www.gifted.uconn.edu/siegle/research/Samples/externalvalidity.html
Validity (statistics) - Wikipedia, the free encyclopedia
In psychology, validity has two distinct fields of application. The first involves test validity , a concept that has evolved with the field of psychometrics: "Validity refers to the degree to whi...
en.wikipedia.org/wiki/Validity_(statistics)
External validity represents the extent to which a study's results can be generalized or applied to other people or settings. Campbell and Stanley (cited in Isaac & Michael, 1971) have identified 4 factors that can adversely affect a study's external validity.
www.umdnj.edu/idsweb/shared/internal_external_validty.h... www.umdnj.edu/idsweb/shared/internal_external_validty.htm
A study that readily allows its findings to generalise to the population at large has high external validity. To the degree that we are successful in eliminating confounding variables within the study itself is referred to as internal validity.
www.une.edu.au/WebStat/unit_materials/c2_research_desig... www.une.edu.au/WebStat/unit_materials/c2_research_design/validity_internal_external.htm
Two types of external validity follow. ... Population validity. To what population can you generalise the results of the study? This will depend on the makeup of the people in your sample and how they were chosen. ... Ecological validity. Laboratory studies are necessarily artificial. Many variables are controlled and...
www.une.edu.au/WebStat/unit_materials/c2_research_desig... www.une.edu.au/WebStat/unit_materials/c2_research_design/validity_threat_external.htm
2. Threats to External Validity ... There are several factors that can reduce a study's external validity, limiting the extent to which you can generalize your results and conclusions beyond the confines of your study.
www.ithaca.edu/beins/methods/demos/threat1.htm
There are four major types of validity in quantitative research: statistical conclusion validity, internal validity, construct validity, and external validity. We will discuss each of these in this lecture.
www.southalabama.edu/coe/bset/johnson/dr_johnson/lectur... www.southalabama.edu/coe/bset/johnson/dr_johnson/lectures/lec8.htm
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