Apsychologist conducts research on life span development by interviewing numerous men and then uses the research findings to describe the different stages of development that both men and women experience.

this is an example of
1) ethnocentrism
2) agism
3) androcentrism
4) racism

Ethnocentrism: evaluation of other cultures according to preconceptions originating in the standards and customs of one's own culture.

Agism: prejudice or discrimination on the basis of a person's age.

Androcentrism: is the practice, conscious or otherwise, of placing male human beings or a masculine point of view at the centre of one's world view, culture, and history.

Racism: prejudice, discrimination, or antagonism directed against someone of a different race based on the belief that one's own race is superior.

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The used coins.. .