Right, I didn't mean to imply that everyone was lying, I just think that wanting to fit in with a group is a strong subconscious drive in such situations. Edit

Right, I didn't mean to imply that everyone was lying, I just think that wanting to fit in with a group is a strong subconscious drive in such situations. Edit: I was curious and did a quick search what the scientific literature says about this, and it seems like it is an accepted problem, though there are techniques used to reduce the effects. To quote one study: "Regarding the use of self-report personality inventories, meta-analytic results have indicated that applicants are able to, and actually do, deviate from honest responses in order to make a good impression (Alliger & Dwight, 2000; Viswesvaran & Ones, 1999). "