New research using Big Data suggests established psychological paradigms on personality types may need to be revised. In the study, Northwestern University researchers analyzed data from more than 1.5 million questionnaire respondents. The review discovered at least four distinct clusters of personality types exist: average, reserved, self-centered and role model. The findings, which challenge existing paradigms in psychology, are published in the journal Nature Human Behaviour. Study leader Dr. Luís Amaral of the McCormick School of Engineering, believes the new perspectives could be of interest to hiring managers and mental health care providers. "People have tried to classify personality types since Hippocrates’ time, but previous scientific literature has found that to be nonsense," said co-author Dr. William Revelle, professor of psychology in the Weinberg College of Arts and Sciences. "Now, these data show there are higher densities of certain personality types," said Revelle,
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