I came across this
"Social desirability bias"
From Wikipedia:
http://en.wikipedia.org/wiki/Social_desirability_bias"Social desirability bias is a term used in scientific research to describe the tendency of respondents to reply in a manner that will be viewed favorably by others. This will generally take the form of overreporting "good" behavior or underreporting "bad" behavior....
A hypothetical example of social desirability bias would be a study of sexual behavior. When confronted with the question "Do you masturbate? If so, how often?", a respondent may be influenced by the societal taboo of masturbation, and either lie (falsely claiming not to masturbate) or downright refuse to answer the question.
Some areas that are sensitive to participants' interpretations of social desirability:
* Sexual behavior and fantasies
* Personal income and earnings
* Feelings of self-worth and/or powerlessness
* Excretory functions
* Compliance with medicinal dosing schedules
* Religion
* Patriotism
* Bigotry and intolerance
* Intellectual achievements
* Physical symptomatology
* Acts of real or imagined physical violence
* Indicators of "kindness" or "benevolence"
* Illegal acts
They should also add the social taboo of "voting for a Republican" to their list.