Why does he or the author consider him a psychologist? I think its a bit misleading when simply reading the title of the article. He has an undergraduate deg

Why does he or the author consider him a psychologist? I think its a bit misleading when simply reading the title of the article. He has an undergraduate degree in psychology, but his master's is in operations research (and correct me if I'm wrong, but OR is usually the application of statistics to business problems, right?). Wouldn't the article more accurately be something like "Operations research guy uses statistical technique motivated by psychology ... "