Damrin, D. E. (1947). A study of the truthfulness with which high school girls answer personality tests of the questionnaire type. Journal of Educational Psychology, 38(4), 223-231.
http://dx.doi.org/10.1037/h0061136
The Bell Adjustment Inventory was filled out by 153 high school girls in the usual signed form, and administered later in a way which made the students suppose their papers could not be identified. Differences between the signed and unsigned responses were slight or negligible, suggesting that the replies to this test are generally truthful. The data entirely contradicted the belief that girls admit maladjustment more readily when anonymous. (PsycINFO Database Record (c) 2016 APA, all rights reserved)