Previous research has shown that extraverts are happier than introverts and, although happy introverts exist, it is unclear under what conditions they can achieve happiness. The aim of the present study is to analyze the quality of social relationships and emotion regulation ability as a possible factor for happiness in introvert individuals. 1006 adults (42% males) completed measures of extraversion, neuroticism, quality of social relationships, emotion regulation ability and happiness. Results shows that introverts have significantly lower happiness, quality of life, quality of social relationship and emotion regulation ability scores than extraverts. Besides, those individuals with high quality social relationships or high emotion regulation ability were happier. Introverts were happier when they had high scores for quality of social relationships and emotion regulation ability, however the effect size was small. These results suggest that emotion regulation and social relationships are important to understand the relationships between introversion and happiness.
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