“…For example, the immediacy or delay to reinforcement can influence preference for concurrently available schedules of reinforcement (e.g., Madden & Johnson, ). The duration and quality of reinforcement (e.g., Beavers, Iwata, & Gregory, ; Hoch, McComas, Johnson, Faranda, & Guenther, ; Horner & Day, ; Neef, Bicard, & Endo, ; Neef et al, ) and the duration and timing of delays to reinforcement (Leon, Borrero, & DeLeon, ) can be manipulated to increase preference for delayed or immediate schedules of reinforcement. Furthermore, the response effort (e.g., Lerman, Addison, & Kodak, ; Neef et al, ; Perrin & Neef, ) of the required responses (e.g., completing easy versus difficult tasks) during concurrently available schedules of reinforcement may influence preference for delayed and immediate reinforcement schedules.…”