The flynn effect refers to the increase in iq scores over the years, and may be due to

What are objects called that have value in and of themselves as well as value as a means of exchange? custom commodity money currency simple money

Most sociologists agree that: a. culture is central in shaping gender roles, but only in preliterate societies. b. biological factors have some influence, but cultural factors are more important determinants of gender roles. c. biological factors are influential in determining gender roles, but only in industrial or complex societies. d. biological factors only explain differences between men and women with regard to aggression and disease. e. there is no difference between the influences of culture or biology on the development of gender roles, as they are unpredictable.

The american public was excited by the invention of the railroad system. true false