Transcription of Why internal validity is not prior to external validity
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Why internal validity is not prior to external validity
Contributed Paper PSA 2012 (draft), p. 1 Why internal validity is not prior to external validity Johannes Persson & Annika Wallin Lund University, Sweden Corresponding author: [Abstract: We show that the common claim that internal validity should be understood as prior to external validity has, at least, three epistemologically problematic aspects: experimental artefacts, the implications of causal relations, and how the mechanism is measured. Each aspect demonstrates how important external validity is for the internal validity of the experimental result.] 1) internal and external validity : perceived tension and claimed priority Donald T. Campbell introduced the concepts internal and external validity in the 1950s. Originally designed for research related to personality and personality change, the use of this conceptual pair was soon extended to educational and social research.
1) Internal and external validity: perceived tension and claimed priority Donald T. Campbell introduced the concepts internal and external validity in the 1950s. Originally designed for research related to personality and personality change, the use of
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