Which one of the big five personality traits most negatively impacts friendships?

Answer 1

neuroticism/emotional stability - Big Five personality traits have been widely used to address different dimensions of human personality, which include agreeableness (i.e., "trusting, cooperative, helpful, caring behaviors and attitudes toward others"), extraversion (i.e., "social outgoingness, high activity, enthusiastic interest, and assertive tendencies"), neuroticism (i.e., "negative affect tendencies, especially fear, worry, and irritability"), conscientiousness (i.e., "tendencies to be responsible, and task oriented"), and openness to new experience (i.e., "how open one is to experience" as well as the degree of explicit expression of curiosity and intellect)