Presenting the consequences of feigning: Does it diminish symptom overendorsement? An analog study

Feigning causes personal and societal consequences, in both civil and criminal context. We investigated whether presenting the consequences of feigning can diminish symptom endorsement in feigned Posttraumatic Stress Disorder (PTSD). We randomly allocated non-native English speaking undergraduates (N = 145) to five conditions: 1) Truth tellers (n = 31), 2) Civil context feigners (n = 27), 3) Civil context warned feigners (n = 26), 4) Criminal context feigners (n = 29), and 5) Criminal context warned feigners (n = 32). All feigning groups received a vignette depicting a situation in which claiming PTSD would be beneficial. One vignette referred to the personal injury claim, whereas the second was about the aggravated assault charges. Additionally, one feigning group from each setting received information about the consequences of feigning (i.e., warned feigners). After receiving the instructions, all participants were administered the Self-Report Symptom Inventory (SRSI), a measure of symptom endorsement. Truth tellers endorsed fewer symptoms than all feigning groups, which mostly did not differ. Yet, criminal warned feigners (59%) were significantly less frequently detected on the SRSI as overreporters than other feigning groups (86.2%-89%). Hence, emphasizing the negative consequences of overreporting may diminish symptom endorsement, but only in high-stake situations. The implications and limitations (e.g., online measure administration) of this work are discussed.