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Marcus Crede Profile picture
Marcus Crede
@MarcusCrede
IO psychologist at Iowa State University. Dustbowl Empiricist. Dabbles in research methods issues.
Oct 19, 2018 • 10 tweets • 2 min read
Listen up “Grit” researchers – grit is not a construct. Duckworth never offered any coherent justification for combining perseverance and passion into a single thing. That higher-order model in Duckworth & Quinn (2009) is an unidentified model. The fact that Duckworth and Quinn did not know how to do factor analysis and could not be bothered to correct their published errors is not a good reason for you to base our own research program on this profoundly flawed concept.