Fig. 8

Answers elicited by interviewers about uses (red) compared to answers elicited from the same informants when interviews are conducted by another interviewer (blue). A vector arrow compares the centroid of each group (a) and the interviewer’s own answers (green). Also shown are the average within each interviewer of the distances of each informant’s answers from their own (b) and the average distances among interviews (c) for both their own interviews (blue) and those conducted by others (red)