According to a 6-year study conducted by Cambridge University, New Yorkers are the most unfriendly and neurotic people in America. The study examined a number of different personality traits, but could not say that New Yorkers have a predisposition for any positive traits.
'Nice' Americans, who share an agreeableness trait (warm, compassionate, cooperative, friendly), are most likely to live in states like North Dakota, North Carolina, and Utah.
Massachusetts was one of the highest scoring states for the 'openness' trait, which is characterized by curiosity, intellect, and creativity.
New Yorkers Are Neurotic and Unfriendly, Says Cambridge U. 'personality map' [Telegraph]