You think that people are going to tell a government survey that they used the government check to buy televisions? :-) Similar to will people who support eith

You think that people are going to tell a government survey that they used the government check to buy televisions? :-) Similar to will people who support either political candidates disclose it in an interview - especially if they live amongst a social circle that leans the other way. This is one of the main reasons survey techniques are being replaced by observational and inferential techniques in market research.