Are video-based preference assessments without access to selected stimuli effective?

This study extended the findings of Snyder, Higbee, and Dayton (2012) by presenting items via video during a paired-stimulus preference assessment but without providing access contingent on selection. Subsequently, items identified as highly, moderately, and less preferred were assessed in a concurrent reinforcer assessment, which suggested that these items did indeed function as reinforcers. © Society for the Experimental Analysis of Behavior.