Unit 7 Flashcards
Functional analysis (FA)
An analysis of the purposes (functions) of problem
behavior, wherein antecedents and consequences
representing those in the person’s natural routines
are arranged within an experimental design so that
their separate effects on problem behavior can be
observed and measured.
-May be necessary for some functions, but not always sufficient
Possible causes of undifferentiated functional
analysis results
- Difficulties in discrimination
- Relevant variables not tested
- Multiple control
- Low rates of behavior
Strategies for clarifying functional analysis
results
- Enhance motivation
- Add discriminative stimuli
- Vary the control condition
Problems with standard functional analysis in
the assessment of low-rate problem behavior
• Behavior may occur infrequently, producing
undifferentiated FA results
• Behavior may occur infrequently, producing
differentiated by inconclusive results
Strategies for conducting functional analyses
of low-rate problem behavior
• Extended session length
• Probes conducted at times when behavior is at
high strength
Concerns with standard functional analysis in
the assessment of high-risk problem behavior
• Problem behavior must occur to measure
patterns of behavior, putting the participant
and/or therapists at risks of harm
• Potentially reinforcing events are provided
contingent on problem behavior
Methods of reducing risks during functional
analysis
- Time-limited assessments
- Use of protective equipment
- Alternative response measures
Precursor behavior
“Behavior that reliably precede the occurrence of
another behavior”
How to calculate conditional probabilities of
precursor behavior
Divide the number of times precursor behavior occur
within 10-s before a problem behavior by the number of precursor behaviors overall
Lag-sequential analysis
Used to assess the probability of precursors at any
moment in time (every second) before and after an
instance of problem behavior
Borrero & Borrero (2008)- high risk & lag sequential analysis
Results of the descriptive analysis showed that the probability of the potential precursor was greater given problem behavior compared to the unconditional probability of the potential
precursor. Results of the lag-sequential analyses showed a marked increase in the probability of a potential precursor in the 1-s intervals immediately preceding an instance of problem behavior, and that the probability of problem behavior has highest in the 1-s intervals immediately following an instance of the precursor. Results of the functional analysis showed that both problem behavior and the precursor served the same operant functions.
Crosland et al. (2003)
Results showed that Risperidone had a differential
effect across behavioral function and topography.
Mechanisms underlying effectiveness of Risperidone may differ across behavioral functions and topographies
Implications of functional analysis of early
intervention
• Results suggest operant processes play an
important role in early development of SIB and
problem behavior.
• Early identification/intervention critical, before
lengthy history of reinforcement is established.
• Inclusion of caregivers as therapist may have
advantages as they provide strong environmental
influence on early behavior
Richman et al. (1999)
Indicated that different response categories may form a response class hierarchy. When different responses are simultaneously reinforced in a functional analysis, more severe forms of aberrant behavior may not occur, thus limiting the ability to clearly analyze behavioral functions.
Problems with combining different
topographies within a single response
category in a functional analysis
• Can result in functional analysis outcomes that
are inconclusive or undifferentiated
• Erroneous or incomplete interpretation of
functional analysis outcomes may result in
evaluation of interventions that are ineffective or
even harmful