- Applied Behavior Analysis Antecedent-Based Interventions Questions and Answers Flashcards

A behavior analyst is implementing antecedent-based interventions for a student who engages in escape-maintained self-injurious behavior during math tasks. After conducting a preference assessment, the analyst embeds the student's preferred activity (drawing) into the math task. Three weeks later, the SIB has not decreased. Which is the MOST likely explanation for the intervention failure?

Answer: The math task difficulty was not modified, so the aversive quality of the task still functions as an abolishing operation for task completion

When the task difficulty remains unchanged, the establishing operation (EO) for escape is still fully intact. The aversive properties of the math task continue to evoke SIB because the antecedent condition — task difficulty — was never addressed. Embedding a preferred item alone does not abolish the EO if the task remains equally aversive. The intervention must also modify task difficulty or intersperse easier demands to function as an abolishing operation for escape-maintained behavior.

During a functional behavior assessment, data reveal that a client's aggressive behavior occurs most frequently in the 30 minutes before lunch and rarely at other times. A behavior analyst implements a non-contingent reinforcement (NCR) schedule using food items to reduce aggression. Which theoretical mechanism BEST explains why this intervention is effective in this context?

Answer: The food delivery functions as an abolishing operation, reducing the momentary value of food as a reinforcer and thereby attenuating the MO that evokes aggression

The data pattern strongly suggests the aggression is food-motivated (occurring pre-lunch when food deprivation is highest). Providing food non-contingently functions as an abolishing operation (AO): it reduces the current value of food as a reinforcer, thereby reducing the evocative effect of the pre-lunch antecedent condition. This is a classic motivating operation-based antecedent intervention — the NCR here works not primarily through response disruption but by attenuating the MO driving the behavior.

A BCBA is training an RBT to implement high-probability (high-p) request sequences. The RBT correctly delivers three high-p requests, the client complies with all three, but then the client refuses the low-p request and engages in tantrum behavior. The RBT immediately delivers another high-p request to 're-engage' the client. What error has the RBT made?

Answer: The RBT negatively reinforced tantrum behavior by withdrawing the low-p demand and replacing it with an easier request, which may strengthen refusal

By removing the low-p demand and delivering a high-p request immediately after the tantrum, the RBT negatively reinforced tantrum behavior (escape from the low-p demand was achieved through tantrumming). This is a critical implementation error: the 're-engagement' strategy must never follow problem behavior, as it functionally rewards the escape behavior. The high-p sequence must be delivered BEFORE the low-p request to build momentum, and if problem behavior occurs after the low-p request is delivered, demand fading or other procedures — not re-presentation of high-p items — should be used.

A behavior analyst reviews literature on antecedent exercise as an intervention for automatically reinforced stereotypy. Which finding would MOST challenge the validity of antecedent exercise as a function-based antecedent intervention for this population?

Answer: Meta-analyses indicate exercise reduces stereotypy across both automatic and socially mediated functions equally, suggesting a non-specific physiological mechanism rather than an MO-based effect

If antecedent exercise truly works by attenuating the MO for automatically reinforced stereotypy (e.g., by providing sensory stimulation), it should show function-specific effects — primarily reducing automatic-reinforcement behavior. If research shows equal reductions across all behavioral functions (attention, escape, automatic), this suggests the mechanism is a non-specific physiological effect (e.g., fatigue, neurochemical changes) rather than an MO-based antecedent intervention. This would challenge its classification as a function-based antecedent procedure and has implications for its selection and application in treatment packages.

A behavior analyst is developing an environmental modification plan for a child with autism who engages in property destruction when transitions occur between activities. The analyst implements visual schedules, transition warnings, and 'first-then' boards. After 8 weeks, property destruction remains elevated specifically during transitions FROM preferred activities. Which antecedent variable is MOST likely insufficiently addressed by the current intervention package?

Answer: The preferred activity itself functions as an establishing operation for property destruction by increasing the reinforcing value of continued access, which the transition removes

The critical antecedent here is the removal of a preferred activity, which functions as an EO: access to the preferred activity increases the value of continued access to that activity as reinforcement. Transitioning away functions as a conditioned establishing operation that evokes the history-based response of property destruction (which may have previously obtained return to the preferred activity). Visual schedules and warnings address temporal predictability but do not modify the reinforcing value of the preferred activity or the aversiveness of its removal. Interventions targeting this EO might include thinning preferred activity access, building tolerance for activity termination, or providing a preferred item contingent on smooth transitions.

In a school setting, a behavior analyst finds that a student's disruptive behavior is maintained by peer attention and occurs almost exclusively during group instruction, not during individual seatwork. The analyst recommends changing the seating arrangement to seat the student away from peers who provide the most attention. A colleague argues this is merely 'antecedent manipulation' without a functional approach. Which response MOST accurately characterizes the intervention in behavioral terms?

Answer: The seating change is a discriminative stimulus (SD) manipulation: it removes the SDs (attention-providing peers) that have historically signaled that disruption will be reinforced, thereby reducing the evocative effect on behavior

The seating change works primarily at the level of discriminative stimulus control. The student's disruptive behavior has come under SD control of specific peers — those peers signal that attention-reinforcement is available for disruption. Removing those SDs by changing the seating arrangement disrupts the stimulus-response-reinforcement chain at the antecedent level. While this is indeed antecedent manipulation, it IS function-based: it directly targets the specific social antecedent variables identified as controlling the behavior through functional assessment. This distinguishes it from non-function-based antecedent changes (e.g., generic environmental modifications without FBA data).