Needle sharing contributes to the spread of the human immunodeficiency virus and other health concerns and remains a persistent problem among injection drug users. We determined whether needle sharing may be related to the discounting of the value of delayed outcomes. Outpatients in treatment...

For the past forty years, alternative methods and techniques have been researched and developed in light of reducing the burgeoning knowledge and memory requirements of individual workers. One such method is reliance on print-based job aids designed to reduce the amount of complex information...