Definition
Compound Schedule refers to a schedule of reinforcement that combines two or more basic reinforcement schedules, such as fixed-ratio (FR), variable-ratio (VR), fixed-interval (FI), and variable-interval (VI). These different schedules can be applied either sequentially, simultaneously, or alternately to control a particular behavior. Each component in the compound schedule operates based on its own rule for delivering reinforcement, depending on the behavior being measured.
Example
A behavior analyst is working with a student to improve their focus during reading sessions. The compound schedule might involve a fixed-ratio (FR) 5 schedule, where the student receives a token after every 5 pages read, combined with a variable-interval (VI) 10-minute schedule, where the student gets additional reinforcement for staying on task, but the reinforcement is delivered at unpredictable intervals averaging 10 minutes. The combination of these two schedules (FR and VI) forms a compound schedule that helps maintain the student’s reading behavior over time by providing reinforcement both for completing tasks and for sustained attention.