Unit 4: DeLeon on Preference/Reinforcer Assessments part 2 Flashcards
determinants of stimulus value
- repeated exposure
- stimulus-stimulus pairing
- contingency
found that pairing low preference stimuli with established reinforcers resulted in a temporary shift in choices allocated to the low preference stimulus.
Hanley, Iwata, Roscoe, Thompson, and Lindberg (2003)
found that provision of supplemental reinforcement for engagement with a less preferred activity resulted in a shift in preference in the direction of the low preference activity.
Hanley, Iwata, an Lindberg (1999)
variables that influence relative response allocation
- quality
- rate of reinforcement
- reinforcer magnitude
- delay to reinforcement
methods for incorporating different reinforcers
- stimulus variation
- daily-brief preference assessment
- pre-session selection
- within session (post-response) choice
relative response allocation between two concurrent response options should approximately equal the relative rate of reinforcement provided for those options.
the matching law
a procedure in which a different reinforcer is selected and delivered by the therapist each time a schedule requirement is met.
stimulus variation
conduct a brief preference assessment each day to determine the most effective reinforcer that day
daily brief preference assessment
ask the learner which reinforcer they would like to earn in the following instructional sessions.
pre-session selection
permit the learner to choose from a small array of reinforcers each time the schedule requirements are met.
within-session (post-response) choice
mechanisms that might account for choice modifying the potability of problem bx.
- can make general context less aversive (AO)
- provide “control”
- permit individuals to avoid (delay) non-preferred activities.
preference for the stimuli is held constant across conditions by “matching” the items delivered during no-choice sessions to those selected during the immediately preceding choice sessions
yoking arrangements in the study of choice
problems with yoking arrangements in the study of choice
preferences may change across brief time spans or as a function of exposure in preceding sessions
All participants exhibited similar rates of responding across choice and no-choice conditions. These findings indicate that for individuals with severe disabilities, access to choice may not improve task performance when highly preferred items are already incorporated into instructional programs.
Lerman, iwata, rainville, adelinis, crosland, and kogan (1997)
Data showed substantially more responding to the button associated with within-session choice than presession choice during concurrent-operant phases. This effect was not as apparent during single-operant phases, suggesting that a concurrent-operants procedure provided the more sensitive evaluation of within-session and presession choice effects.
Graff and Libby (1999)
Deprivation resulted in increased preference, whereas satiation resulted in decreased preference compared to control conditions.
Gottschalk, Libby, and graff (2000)
No consistent differences in responding between choice and no-choice components emerged during single-operant phases. During concurrent-schedule phases, however, all participants had substantially higher rates of responding to the button that led to a choice among reinforcers than to the button that did not lead to choice.
Geckler, Libby, graff, and Ahearn (2000)
An environmental event, operation, or stimulus condition that serves a reinforcer establishing and an evocative function.
Motivational operations