 With a universal proclivity, it would be possible to document the bias across cultures and "across different demographic groups, including among men varying in age, ethnicity, and education level" within cultures and in females based on their job status, health, levels of education and income equality.When investigated in Norway, one of the world's most gender egalitarian societies, error management theory and its evolutionary explanation were supported.In addition, the pattern of misperception of men and women held up across demographic groups differing in relationship status (singles versus partnered participants).