Addiction Research Center Inventory (ARCI): Measurement of Euphoria and Other Drug Effects

This paper reviews the evolution of the Addiction Research Center Inventory (ARCI) into a viable instrument for determining the subjective effects of drugs. Primary focus is on item selection, scale development, the development of short forms for different objectives, and the use of the ARCI as a diagnostic tool. The importance of items and scales of euphoric content in the ARCI is highlighted.