['Large size and high density of population: ADVERTISEMENTS: ... ', 'Heterogeneity: Urban population is heterogeneous. ... ', 'Anonymity: The sheer pressure of number marks for anonymity. ... ', 'Mobility and transiency: Urban life is dynamic. ... ', 'Formality of relations: ... ', 'Social distance: ... ', 'Regimentation: ... ', 'Segmentation of personality:']