Why internal validity is not prior to external validity: Paper presented at PSA 2012

Summary, in English

In Persson & Wallin (2012) 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. This note is an invited summary of these results.

• Author: Johannes Persson; Annika Wallin
• Department/s: Educational Sciences; Theoretical Philosophy; Cognitive Science
• Publishing year: 2012
• Language: English
• Pages: 37-38
• Publication/Series: Brunswik Society Newsletter
• Volume: 27
• Links: http://www.albany.edu/cpr/brunswik/newsletters/index.html
• Document type: Journal article (letter)
• Topic: Psychology (excluding Applied Psychology); Philosophy
• Keywords: internal validity; external validity; Causation; Campbell; Cronbach
• Status: Published