Sewell suggests that this may be due to an ethnocentric curriculum where the material being taught is less relevant to a diverse range of cultures, for example, in History lessons, children are taught white European or American history with very little focus on African culture, except for negative concepts such as slavery. Geography examines 'privileged' and less economically developed countries, highlighting that countries that are more 'developed' are Westernised and the concept of development is judged in economic (capitalist) terms rather than cultural.