4775
He has studied microeconomic issues of financial decision-making , specifically employing randomized controlled trials ( RCTs ) to examine what works and what does not and why with respect to interventions and businesses intended to address problems in society .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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