This initial analysis identified systematic differences in national cultures on four primary dimensions: power distance (PDI), individualism (IDV), uncertainty avoidance (UAI) and masculinity (MAS), which are described below. As Hofstede explains on his academic website,[4] these dimensions regard "four anthropological problem areas that different national societies handle differently: ways of coping with inequality, ways of coping with uncertainty, the relationship of the individual with her or his primary group, and the emotional implications of having been born as a girl or as a boy". In 1984 he published Culture's Consequences,[5] a book which combines the statistical analysis from the survey research with his personal experiences.