Bias due to interviewer gender A social scientist in a less developed country studied the effect of the gender of the interviewer in a survey administrated to male respondents.

The survey addressed the question of women’s participation in politics. Half the subjects were surveyed by males and the remaining half by females. Results showed of the respondents surveyed by males, about 37%

favored active participation of women in politics in their country while of the respondents surveyed by females, 67% favored the active participation of women in politics.

Which type of bias does this illustrate: sampling bias, nonresponse bias, or response bias? Explain.