Preliminary evidence for a relationship between prospective memory and PTSD symptoms in the general population

•PTSD symptom severity positively correlated with subjective prospective memory failures.•Stress predicts subjective prospective memory more than PTSD symptoms.•PTSD symptoms affect prospective memory via maladaptive appraisals and strategies. PTSD sufferers often have problems with remembering the past, but do they also have trouble remembering tasks to be completed in the future? We argue characteristics of PTSD—such as negative appraisals and maladaptive strategies—might contribute to biased reporting of prospective memory failures among PTSD sufferers—or people with severe PTSD symptoms—within a general population. Mechanical Turk participants completed a questionnaire battery measuring self-report prospective memory, PTSD symptoms, negative appraisals and maladaptive strategies (e.g., suppression), and depression, anxiety and stress symptoms. PTSD symptom severity positively correlated with self-report prospective memory failures (rs = .42–49). PTSD symptoms affected self-report prospective memory via their influence on negative appraisals and maladaptive strategies. Our findings rely on self-report, therefore we do not know if this relationship generalizes to objective prospective memory tasks. Our data provide preliminary evidence for a relationship between PTSD symptomatology and subjective prospective memory in the general population and suggest that the negative appraisals and maladaptive strategies that commonly accompany PTSD might underpin this relationship.