I always believed drinking just gave people permission to do what they wanted to do anyway.
The self-assessment carried out by the participants confirmed the usual signs of drunkenness. According to the participants, drinking changed their personality across all of the five traits as defined by the classic Five Factor Model: neuroticism, extraversion, agreeableness, intellect, and conscientiousness.
The participants reported feeling less conscientious, less open to new experiences, and less agreeable, while they felt more extroverted and more emotionally stable.
However – and this is the interesting finding of the study – the outside observers saw far fewer differences between the participants’ sober and drunk “personalities.” The observers’ assessment and the self-reported one concurred on only one aspect: extraversion.