Unit 2 Flashcards
Reinforcer assessment evaluates: _____
Effectiveness of a stimulus as a reinforcer
Single operant reinforcer assessment: _____
Reinforcement is provided for a single response
Absolute reinforcer value is the ability of: _____
A single stimulus to reinforce responding
Concurrent operant reinforcer assessment: _____
Different reinforcers are simultaneously available for different responses
Relative reinforcer value is the ability of 1 stimulus to: _____
Function as a more powerful reinforcer than another
Progressive-ratio reinforcer assessment: _____
Finds break point as response requirement increases
Break point is evaluated in: _____
Progressive-ratio schedules
Break point: _____
Last ratio value where responding occurred
Stable preferences: _____
Remain the same over time
Reinforcement as a procedure: _____
Contingency arranged to influence learning
Reinforcement as a process: _____
Effect of consequence to strengthen behavior
Types of reinforcer assessments (3): _____
(1) Single operant
(2) Concurrent operant
(3) Progressive-ratio
Single operant reinforcer assessment assesses: _____
Absolute reinforcer value
Concurrent operant reinforcer assessment assesses: _____
Relative reinforcer value
Progressive-ratio reinforcer assessment assesses: _____
Capacity for thinning schedule of reinforcement
Considerations when selecting stimuli for PAs (5):
- Social validity
- Context
- Cost
- Health and secondary effects
- Program goals
Prioritizing types of reinforcers:
- Social items
- Leisure items with tokens
- Edibles with tokens
- Distributed edibles
Variables that impact reinforcer effectiveness (5):
- Parameters of reinforcement
- Satiation and deprivation
- Stimulus variation and choice
- History of contingencies
- Way reinforcement is delivered
Unwanted effects of reinforcement (5):
- “Unnatural” contingencies
- Undesirable response patterns
- Narrowing effect on behavior
- Shadowing the SD
- Strengthening undesired behavior
Solution for a narrowing effect on behavior
Use a reinforcement schedule that promotes variation
Solution for undesirable response patterns
Careful selection of schedules of reinforcement
Solution for “unnatural” contingencies
Program natural reinforcement contingencies
Solution for shadowing the SD
Program “natural” antecedents or systematic transfer of discriminative control
Solution for strengthening undesired behavior
Pay attention to the type of response occurring when a reinforcer is delivered
Undesirable response patterns
The schedule of reinforcement used might influence undesirable rates (too high or too low) or inconsistent responding
Shadowing the SD
Learner might only attend to the discriminative stimulus established during training and not to “natural” antecedents that should control the behavior
“Unnatural” contingencies
Consequences that are different from the consequences that will be experienced in the “natural” environment and may therefore create a dependency on “contrived” reinforcers
Strengthening undesired behavior
Unwanted effect of reinforcement is related to the type of response immediately followed by a reinforcer is the type of response more likely to occur, meaning the wrong type of response could be selected
Narrowing effect on behavior
Unwanted effect of reinforcement related to only a specific type of responding is followed by a reinforcer, only that type of responding is more likely to occur
Concurrent Operant Reinforcer
Assessment Procedure
- Select two (or more) identical tasks
- Arrange a concurrent schedule
- Completion of Task 1 = Stimulus A
- Completion of Task 2 = Stimulus B - Include baseline phase or control condition
- No programmed consequences - Analyze differences in responding between
conditions
Single Operant Reinforcer
Assessment Procedure
- Identify single response and consequence
- Control: No programmed consequence for
response - R-S contingency: Provide stimulus
contingent on response (typically FR 1) - Repeat steps 2 and 3 using reversal or
multielement design - Analyze differences in responding between
baseline and reinforcement conditions
When to Use a Concurrent Operant
Reinforcer Assessment
- Multiple sources of reinforcement
- Identify more valuable reinforcers to use for more difficult tasks
- Avoid satiation
- To assess value of different magnitudes of a reinforcer
When to Use a Single Operant
Reinforcer Assessment
- To validate results of preference
assessments - To identify a large array of reinforcers
Limitations of Concurrent Operant
Reinforcer Assessment
- May mask reinforcer effects for lower
preference stimuli, resulting in false
negatives - Does not assess reinforcer
effectiveness when response
requirements increase
Limitations of Single Operant
Reinforcer Assessment
- Not likely to identify “potency” relative to others
- Not likely to identify if there are
competing contingencies - Not likely to identify if response effort
increases
Progressive-Ratio Reinforcer
Assessment Procedure
1. Identify a response and a consequence 2. Arrange a progressive-ratio schedule 3. Provide reinforcement based on ratio requirement until participant ceases to respond for a predetermined amount of time (break point)
Limitations of Progressive-Ratio
Reinforcer Assessments
- More labor-intensive
- Practical limits on how much to
continue increasing the response
requirements
When to Use Progressive-Ratio
Reinforcer Assessment
- Response requirements will increase (Thinning schedules)
- To determine effective parameters of
reinforcement when increasing response effort - To identify reinforcers that compete
with problem behavior when teaching
alternative or incompatible behavior
Short-Term Targets (What & When to Reassess)
- Frequent, moderate effort response
requirements with many
opportunities to contact reinforcers - Assess more frequently
Long-Term Targets (What & When to Reassess)
- High effort, prolonged intervention with fewer opportunities to contact ultimate reinforcers - Use a more thorough initial assessment
Use the most efficient (brief MSWO) if….
There is a need for several effective
reinforcers
Use a more thorough
assessment (paired-stimulus) when…
Requiring prolonged effort for a
single reinforcer
Four Parameters of Reinforcement
- Quality
- Delay
- Magnitude
- Rate
Reinforcement During Acquisition
- Powerful, immediate consequences are ideal -- High quality -- Short delay -- Longer duration
- Consequence contacted EVERY TIME!
Reinforcement During
Generalization
- Could be:
- Longer delay
- Different type (quality)
- Shorter duration
- Intermittent schedules