Which survey type is most susceptible to social desirability bias?

• A. Stated preference - self reported behavior
• B. Observational field data
• C. Administrative records
• D. Experimental tests

Answer: (A)

Social desirability bias shows up when people tailor their answers to look good. Stated preference or self-reported behavior relies entirely on what someone says about their own choices or actions, so it’s the most vulnerable to this bias. People may claim they engage in prosocial behaviors or hold attitudes they think are socially acceptable, even if their actual behavior doesn’t match. Observational field data record what people actually do, which reduces the influence of wanting to appear favorable—though being watched can still alter behavior. Administrative records capture real actions logged by systems, not self-reports, so they’re even less affected. Experimental tests can be designed to minimize bias through controls and blinding, but they’re still generally less susceptible than direct self-reports.