Perceived familiarity or factual knowledge? Comparing operationalizations of scientific understanding

@article{Ladwig2012PerceivedFO,
  title={Perceived familiarity or factual knowledge? Comparing operationalizations of scientific understanding},
  author={Peter J. Ladwig and Kajsa E. Dalrymple and Dominique Brossard and Dietram A. Scheufele and Elizabeth A. Corley},
  journal={Science and Public Policy},
  year={2012},
  volume={39},
  pages={761-774}
}
This study compares two frequently used operationalizations of understanding: factual knowledge and perceived familiarity. The authors argue that these measurements--which have been used interchangeably in past research--are conceptually distinct and should be treated as such. Using hierarchical linear ordinary least squares regression, this study provides evidence that factual knowledge and perceived familiarity are only slightly correlated and are influenced differently by predicting… 

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