Measuring the effects of demand characteristics on the Beck Depression Inventory responses of college students

To determine whether Beck Depression Inventory (BDI) responses could be influenced by an instructional set or by changing the item order, 198 college students were randomly assigned to one of four conditions: instructions designed to facilitate or inhibit responding, along with standard vs. reordered symptom questions. A 2×2 ANCOVA found a main effect only for the inhibitory message. The suppression of scores by the inhibitor instructional set suggests caution regarding possible demand characteristics when using the BDI with this population and should be further studied with clinically symptomatic samples.