The purpose of this study is to examine the effects of a decision aid on veterans with posttraumatic stress disorder (PTSD) presenting for care. The investigators' primary hypothesis is that patients assigned to use the decision aid will demonstrate improved quality of decisions regarding PTSD treatment relative to patients assigned to usual care. Improved decision quality will be examined by assessing patient's knowledge of treatments, evaluation of the risk and benefits, ability to arrive at a decision, and certainty about that decision. The investigators' secondary hypothesis is that patients assigned to the decision aid will be more satisfied with their care and more compliant with their care compared to patients assigned to receive usual care. The investigators will also determine whether patients assigned to the decision aid, relative to patients assigned to usual care, are more likely to receive evidence-based treatments for PTSD and experience reductions in PTSD symptoms.