The prediction of Life Style and Big Five Personality by Birth Order and Family Size in Students

Birth order and family size can play an important role in life style and personality. The purpose of this research was to investigate the role of birth order and family size in predicting of life style and personality types in students. In this correlation research, 360 students of Guilan university selected by multistage clustered sampling and filled the Basic Adlerian Scale for Interpersonal Success(BASIS-A) and NEO personality Inventory. Spearman correlation and regression were used for analyzing the data. There is negative correlation between birth order with wanting recognition, going along taking charge and entitlement, and positive correlation between birth order and being cautious, belonging-social interest and harshness. Also, there is negative correlation between birth order and neuroticism, extraversion and conscientiousness. Family size was negatively correlated to taking charge life style and positively to neuroticism. According to multivariate regression with enter method birth order negatively predicted the wanting recognition, going along and taking charge life styles; Birth order negatively predicted the neuroticism, extraversion and conscientiousness. But, family size has not a role in predicting the life styles and personality dimensions. Results supported the relationship between birth order and family size with some of life styles and personality and has important implications in attending to the role of birth order and family size in life style and personality.