As lead author, Brady Roberts worked with his supervisors Myra Fernandes and Colin MacLeod, both UWaterloo professors in psychology, to conduct a systematic review and meta-analysis of the past 60 years of research on the enactment effect. Meta-analyses chronicle what previous studies have shown and assess various factors in the studies including how study design influences the reliability of results. To get these insights, Roberts conducted a systematic examination of 145 behavioral, seven neuroimaging, and 31 neurological patient studies. From this range of work, he compared findings of different encoding strategies such as physical action, reading words or phrases, watching another person perform actions, and imagining performing actions.
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