Using the following question in a survey to elicit the effectiveness of an advertising campaign would suffer from what sort of bias: "Was the primary reason for your purchase of this product the advertising campaign?"
A) Selection bias
B) Confirmation bias
C) Availability bias
D) Statistical bias

Question

Quizplus · Accepted Answer

This question suffers from confirmation bias because it assumes that the advertising campaign was the primary reason for the purchase and only asks respondents to confirm that assumption. It does not leave room for other factors that may have influenced the purchase decision, leading to a biased result.

Using the Following Question in a Survey to Elicit the Effectiveness