ABA100 Test 2: Reinforcement Assessments
a measurement associated with the likelihood an individual is to engage with that stimuli
• Duration• Frequency• Latency• Intensity? / Topography? - ANS-Preference
Indirect - Involves subjective measures
• Direct - Involves observing and measuring engagement and choice responses -
ANS-Preference assessments can be:
A preference assessment in which the individual is given free access to available stimuli;
Familiarize individual with all items (optional)
Allow individual free access to items in the room
Record engagement
• Typically - partial/whole interval 5-10s - ANS-Free Operant Preference Assessment (FO - PA)
Procedure
Percent of intervals engaged with (estimated frequency & duration)
Response Latency - ANS-FO-PA Calculation
Strengths
Most naturalistic
Identify unknown stimuli
Does not involve altered MO states
Simple procedure
• Weaknesses
Individual must be capable of self-selection
Lessusefulforconsumablestimuli
Individual may allocate all responding toward one item and thus you cannot develop a hierarchy
of preference - ANS-FO-PA Strengths and Weaknesses
A preference assessment in which the individual is given access to each stimuli one at a time
for a set period of time
• Logic:
Response Latency will be lower for higher preferred stimuli
Frequency / Duration will be higher for higher preferred stimuli - ANS-Single-stimulus (PACE
method)
Familiarize individual with all items (optional)
Present one item at a time (typically 5-10min trials)
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