Final answer:
A two-component schedule with separate stimuli is called a Multiple schedule. Different types of reinforcement schedules define when and how often reinforcement is given, with a multiple schedule involving alternating reinforcement criteria tied to distinct stimuli.
Step-by-step explanation:
A two-component schedule in which both components have separate stimuli is called a Multiple schedule. When we look at partial reinforcement schedules, the focus is on how often the reinforcement is presented, which can be either fixed or variable and based on an interval or ratio schedule. A multiple schedule involves two or more schedules of reinforcement, each associated with a different stimulus, and these alternate, often unpredictably. In contrast, a chained schedule contains elements of two or more simple schedules performed in a specific sequence, each with its own stimulus, but often resulting in a terminal reward only after the last response. A tandem schedule is similar to a chained schedule but does not use different stimuli for each component of the schedule. Lastly, a mixed schedule is like a multiple schedule but the reinforcement components are presented without different stimuli.