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He then attended Harvard Business School as a Ford Foundation Training Fellow on the Human Relations Faculty , and the University of Chicago , from which he received a Ph.D. in psychology in 1955 .
 Harvard Business School, University of Chicago
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Harvard Business School, University of Chicago