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
Motivational Operations
Hanley et al. (2006)
Satiation can influence preference rank
Motivational Operations
McAdam et al. (2005)
Deprivation and satiation effects also influenced preference assessment with activities
Motivational Operations Does sat/depriv also influence performance? 1
Vollmer& Iwata (1991)- less natural conditions of sat/dep - various stimuli.. stronger effect with deprivation
Motivational Operations Does sat/depriv also influence performance? 2
Zhou, Iwata, & Shore (2002) Deprivation and satiation for food reinforcers under less contrived arrangements – found no strong effect as both dep/sat produced responses higher than baseline…
Arguments against tangibles
Not natural/cumbersome. Not natural difficult to deliver immed. Can disrupt ongoing beh. Food health concerns. More $.
Arguments for praise
Natural in classroom. Doesn’t disrupt responding
No cost but effort. Little time immed/ to multiple individuals. Less subject to satiation? More easily maintained? May increase task interest?
Difficult to assess social reinforcers Smaby, McDonald, Ahearn, & Dube (2007)
eliminated preference assessments. Conducted brief reinforcer assessments for social stimuli with – Social consequence vs. extinction. Used tickles, head rubs, praise
Did see lower levels during extinction
Dozier (2007)
Compared procedures for establishing praise as a reinforcer: 1.
New response procedure – pairing previously neutral stimulus with already established reinforcer, then presenting previously neutral stimulus contingent upon new response to see whether that stimulus has obtained conditioned reinforcing properties DID NOT WORK
Egel 1982- stimulus variation
Egel (1982)
–Compared constant & varied consequences
–With one constant reinforcer, participants demonstrated gradual reductions in responding, but when reinforcers are varied, responding was maintained at high levels