Social desirability response bias and dietary inventory responses.

Royal Australian Air Force recruits completed a dietary frequency inventory (n = 309), a short social desirability inventory phrased in dietary terms (SDF, n = 309), and, in addition, a subsample answered the Marlow-Crowne social desirability scale (n = 96). Correlational and factor analyses showed that the SDF scores were related to the MC scale; and, the scores on the SDF scale were significantly related to the reported consumption of fresh fruit and vegetables and snack foods. In a further study, 20 lay persons were asked to sort the 66 foods listed in the dietary inventory into three categories: nutritionist-approved foods; nutritionist-disapproved foods; and, an 'uncertain' category. The results confirmed the finding that fresh fruit and vegetables were socially desirable foods, but sweet foods were not. It is concluded that social approval needs may influence the manner in which individuals report their consumption of these foods.