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Mark Richard Rosenzweig ( September 12 , 1922 – July 20 , 2009 ) was an American research psychologist who found in animal studies on neuroplasticity that the brain continues developing anatomically , reshaping and repairing itself into adulthood based on life experiences , overturning the conventional wisdom that the brain reached full maturity in childhood .
 Mark, Rosenzweig
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mark, Rosenzweig