Factor analysis of qualitative ratings
As specified in our pre-registration, we planned to factor analyze responses to the following scales: moving, profound, witty, lyrical, inspiring, beautiful, meaningful, original. However, we found higher-than-expected correlations among all of our qualitative ratings; polychoric correlations ranged from 0.472 to 0.886, with a mean of 0.77. Therefore, we performed factor analysis on all 14 qualitative ratings. Parallel analysis suggested 4 factors. We performed a maximum likelihood factor analysis with an oblique rotation; factor scores were estimated using the ten Berge method21.
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