Longer-term effects of inducing harm related intrusions: Implications for research on obsessional phenomena

► We examined the longer-term psychological effects of inducing harm-related intrusive thoughts. ► We measured participants TAF beliefs after an intrusive thought induction and one week later. ► In vivo ratings of: anxiety, likelihood TAF, moral TAF, and the urge to neutralize significantly decreased after one week. ► Negative thought inductions are not associated with longer-term psychological risk. ► In vivo inductions provide a safe and non-intrusive way of studying OCD paradigms in a laboratory setting.