= Erika H. Siegel
{c}
<Erika H. Siegel> studied variability in physiological responses during <emotion>. Her meta-analysis evaluated whether <emotion> categories exhibit consistent autonomic fingerprints across studies and induction conditions. This asks how strongly a category predicts a pattern of bodily measurements, rather than treating one physiological channel as a direct label for an <emotion>. Variation within a category is therefore part of the evidence a theory must explain. <Emotion fingerprints or emotion populations by Erika H. Siegel and others>[2018, meta-analytic comparison of autonomic responses and variability]{ref}
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