Happiness is a thing called stable extraversion: a further examination of the relationship between the Oxford Happiness Inventory and Eysencks dimensional model of personality and gender

The Oxford Happiness Inventory and the short form Revised Eysenck Personality Questionnaire were completed by 121 male and 335 female students in Wales. The findings confirm the internal reliability of the Oxford Happiness Inventory and support the view that happiness is a thing called stable extraversion.