Unit 4 Flashcards
Hanley et al. (1999, 2003, 2006) Findings:
– Clear preferences emerged when access follows pictorial representation
– Enhancing an activity with supplemental contingent reinforcement can shift choices towards that activity
– Noncontingent pairing of an activity with established preferred stimuli can shift choices towards activity
– Effects seem to be transient
Reinforcer & schedules dimensions known to influence relative response allocation
- Quality
- Rate of reinforcement
- Reinforcer magnitude
- Delay to reinforcement
- Self-control: Delay vs. magnitude
Neef et al. studies (1992, 1994, 2001)
Assessment to determine which aspect of reinforcer delivery children most sensitive to:
• Rate • Quality • Immediacy • Effort
Why useful?
1. Avoids trial and error for each student
2. Influential dimensions may correlate with
Diagnoses (like ADHD did with immediacy!)
methods for incorporating different reinforcers
- Stimulus variation
- Daily brief preference assessment
- Pre-session selection
- Post-response reinforcer choice
Stimulus variation • Egel (1982) Findings:
With constant reinforcer, decreases in responding occurred across successive blocks of trials. (satiation)
But, when reinforcers are varied, this responding does not decrease.
Daily brief preference assessment
DeLeon et al. (2000)
Initial, then daily preference assessments
– Examined relative response allocation & when the most preferred item differed… Found that the reinforcer identified that day, is the most effective reinforcer.
Pre-session selection vs. Within-session choice Graff & Libby (1999)
Found that learners prefer within-session choice arrangements over pre-session choice arrangements
Post-response reinforcer choice
Dyer, Dunlap, and Winterling (1990)
reduced levels of problem behavior observed when students, rather than teachers, choose which instructional tasks and reinforcers
Reinforcer Choice not always effective! HP
Reinforcer Choice not always effective! HP Smith et al. (1995) and Lerman et al. (1997) suggested no choice effects if all stimuli are high preference
Reinforcer Choice not always effective! LP
Reinforcer Choice not always effective! LP Waldron-Soler et al. (2000) replicated Lerman procedures but used LP stimuli. Found no differences for choice vs. no-choice conditions when the less preferred stimuli used as reinforcers and also found low response rates
Yoking procedures
Ensures quality of reinforcement constant across choice and no-choice conditions. These studies suggest no effects of choice
Ceiling effects
response rates as high as the learner’s abilities permit regardless of conditions
More Choice – summary -
Smith et al., Lerman et al., Waldron-Soler et al.
No effect of choice in single operant
More choice -Tiger et al.
Preference for choice in concurrent choice
Motivational Operations Gottschalk, Libby, & Graff (2000)
preference assessment (food) outcomes can be influenced by satiation/deprivation effects