BCBA Exam Prep: Board Certified Behavior Analyst (BACB) Study Guide + 590+ Practice Questions

A behavior analyst is fading visual prompts for a child with autism learning a toothbrushing chain. The child reached 80% independence using most-to-least prompting, but progress has plateaued for 5 sessions; data show the child consistently waits for the prompt before initiating each step. The school team needs the bathroom routine shortened within 2 weeks. Which change to the fading procedure is most likely to promote independent responding efficiently under this time constraint?

A behavior analyst implements a DRO 5-minute procedure with extinction to reduce elopement for a 7-year-old student in a special education classroom. Baseline data showed elopement occurring in 60% of 10-second intervals. After one week, data indicate elopement decreased to 30% of intervals, but property destruction (a novel behavior) now occurs at 15% of intervals. The student earns tokens on the DRO schedule exchanged for iPad time. The parent refuses further extinction procedures. Which modification is the *most* appropriate next step for the DRO intervention?

A behavior analyst is consulting in a 3rd-grade classroom for Liam, who engages in screaming (averaging 15 occurrences per hour during transitions) to escape non-preferred tasks. A DRA procedure was implemented 2 weeks ago where Liam earns a 2-minute break (identified via preference assessment) for appropriately requesting “break” using a card. Staff implemented the procedure with 95% fidelity, reinforcing card touches immediately and consistently. Liam uses the card 8-10 times per hour, but screaming remains at 12 occurrences per hour. The teacher reports limited staff availability to manage more frequent breaks. What is the *most critical* modification the behavior analyst should recommend to increase the effectiveness of this DRA intervention?

A behavior analyst is developing a behavior intervention plan (BIP) for a 12-year-old client with autism who engages in severe self-injurious behavior (SIB) during transitions. The current protocol involves two staff physically blocking SIB attempts, which often results in the client crying and struggling. The client’s parents have provided written consent for physical intervention. During a recent observation, the analyst notes the procedure causes significant client distress. The analyst has limited time before the next IEP meeting to revise the plan. Which action by the analyst best upholds the client’s dignity according to the BACB ethics code?

A BCBA is developing a measurement plan for a student’s hand-to-head self-injurious behavior (SIB) in a special education classroom. The SIB occurs at a high rate (estimated 20-30 instances per 30-minute session), with individual instances varying significantly in duration (1-15 seconds). Due to staffing constraints, only one paraprofessional is available to implement the plan while also managing other instructional demands. The BCBA needs a system that provides a valid estimate of the behavior’s occurrence without requiring the paraprofessional’s undivided attention for the entire session. Which measurement procedure is *most* appropriate under these constraints?

A BCBA in a group home observes sudden property destruction by Maria, a 22-year-old with IDD. Data indicate the behavior began after a staffing change but occurs only with one specific staff member during medication routines. Environment, medication, and health status are unchanged. Staff report no antecedent changes. The BCBA must prioritize interventions under facility policy limiting extended assessments. What is the *most* parsimonious initial hypothesis?

A behavior analyst, Jamal, works with Marcus, a 22-year-old man with intellectual disability in a group home. Marcus independently completes his laundry routine. A staff member enthusiastically praises him loudly in the common area, saying, “Wow, Marcus! You put your socks in the hamper ALL BY YOURSELF! What a BIG BOY!” Marcus looks down and quickly walks away. Jamal reviews the data showing the praise procedure is effective for skill acquisition but notices Marcus now hesitates to enter the common area during laundry times. What is the *most* critical ethical consideration for Jamal regarding the staff’s action?

A BCBA is assessing fluency in a client’s tooth-brushing routine. Discrete steps (e.g., applying toothpaste, brushing) are recorded during 5-minute sessions. The client completes all steps correctly but takes inconsistent, lengthy pauses between steps. The BCBA wants a precise measure to evaluate if pauses between steps are decreasing over time, indicating improved fluency. Which measurement is *most* appropriate for tracking progress specifically on the pauses between individual responses?

A rapidly growing ABA clinic hires several new BCaBAs to supervise RBTs. The clinical director, a BCBA-D, notices emerging inconsistencies in how different BCaBA supervisors train staff on functional communication training (FCT), leading to variability in RBT implementation and client data across teams. Some supervisors rely heavily on verbal instruction alone, while others inconsistently apply behavioral skills training (BST) components. The director mandates that all BCaBA supervisors receive training on a standardized supervision protocol emphasizing BST (instruction, modeling, rehearsal, feedback) for teaching RBTs FCT procedures. What is the MOST significant benefit of implementing this standardized, behavior-analytic supervision approach for the BCaBAs in this context?

A BCBA is developing a behavior intervention plan for a 7-year-old student with autism who exhibits aggression during transitions. The BCBA has limited experience with transition-related aggression in this age group. The student’s occupational therapist (OT) declined consultation due to workload. The BCBA’s supervisor is unavailable for guidance for two weeks, and the Functional Behavior Assessment (FBA) must be completed within that timeframe to meet the IEP deadline. What is the BCBA’s *most* ethically appropriate next step?

During a group supervision session, a supervisee hesitantly points out that the BCBA supervisor often reschedules meetings last-minute, making it difficult to prepare questions. The supervisor has a high caseload and genuinely struggles with scheduling. The supervisee appears anxious while sharing this. How should the supervisor *best* respond to model accepting feedback effectively?

A researcher is designing a study to investigate the effects of different reinforcement schedules on task persistence in adults with ADHD. The study uses a controlled laboratory setting, precise measurement of response rates, and a within-subject reversal design. The primary goal is to identify fundamental principles of reinforcement dynamics, with no immediate plan to develop clinical interventions. During ethics review, a committee member questions the study’s practical relevance. The researcher argues that understanding basic behavioral mechanisms is essential for future applied innovations. Which branch of behavior analysis does this study *most directly* represent?

A BCBA supervisor is developing initial supervision goals for a new supervisee assigned to a culturally diverse elementary school. The supervisee demonstrates strong technical skills in data collection and basic intervention implementation but exhibits discomfort during parent interactions, particularly with families from cultural backgrounds different from their own. The school district has recently emphasized culturally responsive practices. The supervisor has only 3 months before annual IEP reviews for several students. Based on an assessment of the supervisee’s skills, cultural variables, and the environment, which supervision goal should be prioritized FIRST?

A BCBA is consulting with a 4th-grade teacher concerned about a student who frequently “stops focusing during independent work.” The teacher reports the student often looks around the room or talks to peers instead of working, impacting assignment completion. The teacher wants the student to “focus better.” The BCBA has one week before the next IEP meeting to propose an initial, measurable goal based on observable behavior. Which proposed goal by the BCBA best operationalizes the target behavior in observable and measurable terms for immediate intervention planning?

A behavior analyst in an elementary school is reviewing intervention data for a student exhibiting aggression. The current intervention (Intervention X) reduced aggression by 80% but requires 15 hours per week of dedicated paraprofessional support. An alternative intervention (Intervention Y) shows a 60% reduction based on pilot data but only requires 5 hours per week of paraprofessional time. The school has a strict cap on total paraprofessional hours available, and freeing up hours would allow support for two other students with high-risk behaviors. The analyst must recommend the most efficient intervention considering both effectiveness and resource allocation. Which intervention should the analyst recommend?

A BCBA is implementing a new discrete trial teaching (DTT) program for skill acquisition with a client. The program involves 10 distinct steps per trial, and sessions run for 45 minutes, typically yielding 10-12 trials. Due to scheduling constraints, the BCBA can only observe sessions for 5-minute blocks. The BCBA needs to measure procedural integrity (PI) accurately to ensure staff correctly implement all 10 critical steps per trial. Which measurement procedure will yield the *most representative* PI data under these constraints?

A BCBA supervises an RBT implementing discrete trial training (DTT) with a child with autism. Recent data shows the child’s skill acquisition plateaued in two target programs. Session notes indicate the RBT occasionally misses prompt fading steps and provides non-contingent praise. The BCBA has only 30 minutes weekly for direct supervision. Which primary benefit does prioritizing behavior-analytic supervision in this scenario most directly provide?

A behavior analyst is consulting with a 4th-grade teacher struggling with a student who frequently leaves his seat. The teacher implemented a DRO procedure using tokens for remaining seated but reports inconsistent results. During observation, the analyst notes the teacher often asks the student, “Why did you get up? Were you bored?” and provides lengthy explanations about the importance of staying seated. The analyst determines the teacher’s approach is inadvertently reinforcing off-task discussion. Based on philosophical foundations of behavior analysis, what is the PRIMARY concern with the teacher’s current method?

A behavior analyst is designing an intervention to reduce frequent physical aggression (averaging 10 instances per hour during academic tasks) displayed by a 9-year-old student in a public school. A differential reinforcement of other behavior (DRO) procedure implemented for 3 weeks showed minimal effect. School policy strictly prohibits exclusionary time-out or removal of earned tokens/points. The analyst must prioritize rapid reduction due to safety concerns. Which punishment procedure is both permissible under policy and most directly targets the behavior given the constraints?

A behavior analyst is teaching a young child with autism to tact household items using pictures. They train the relations: Picture of Cup (A1) with spoken word “Cup” (B1), and Picture of Spoon (A2) with spoken word “Spoon” (B2). Next, they train matching the spoken word “Cup” (B1) to the written word CUP (C1) and “Spoon” (B2) to SPOON (C2). Without direct teaching, the child now correctly matches the Picture of Cup (A1) to the written word CUP (C1) and Picture of Spoon (A2) to SPOON (C2). The child also selects the correct picture when hearing the spoken word and points to the correct written word when shown the picture. Which process best explains this emergence of untrained relations?

A BCBA is developing an intervention for a 10-year-old non-vocal student with ASD who engages in property destruction (FBA indicates attention function). The student’s family strongly values communication development and rejects interventions solely focused on reducing problem behavior. School staff have limited training time. The BCBA must select an intervention that is evidence-based, feasible, and respects family values. Which intervention should the BCBA prioritize?

A behavior analyst is reviewing data from a reversal design (A-B-A-B) implemented to reduce hand-mouthing in a 7-year-old student. Baseline (A) shows stable high rates. The first intervention (B) phase shows a sharp decrease, coinciding with the student starting a new medication. Returning to baseline (A) sees rates increase, but the medication continued. The second intervention (B) phase, still with medication, again shows a sharp decrease. The analyst has limited time to determine if the design adequately demonstrates experimental control. Which feature is the *strongest* indicator that experimental control was achieved despite the confounding variable?

A behavior analyst is developing a preference assessment for a 7-year-old client with limited vocal skills in a school setting. Previous paired-stimulus assessments showed inconsistent item selection, while caregiver interviews indicate strong preferences for specific toys. The team has only 10 minutes daily for formal assessment without disrupting academic instruction. Which assessment method *best* balances validity and practicality to identify reinforcers under these constraints?

A BCBA manages home-based services where safety protocols require technicians to complete a 10-step safety checklist before each session. Data indicate 40% of technicians skip steps, particularly during high-stress visits. Technicians report the checklist is “too cumbersome” when families are waiting. The BCBA must enhance compliance using a performance management strategy grounded in response effort manipulation. Which solution is most effective?

A BCBA supervises a clinic implementing a new staff training protocol. Staff struggle to consistently apply error-correction procedures during DTT. One staff member suggests, “We need to understand *why* trainees forget steps—maybe they lack motivation.” The BCBA aims to align training with behavior-analytic philosophy. Which measurement approach best adheres to the principle of parsimony and philosophical pragmatism?

A BCBA is consulting in a 3rd-grade classroom. A student frequently shouts out during independent work time to gain teacher attention. The BCBA helps the teacher implement a plan: contingent on shouting, the student immediately loses 3 minutes of recess (a preferred activity). Data collected over two weeks show a clear decrease in shouting. What type of contingency does this intervention exemplify?

A behavior analyst is consulting in a 3rd-grade classroom for a student with autism who engages in tantrums during transitions. Data show tantrums occur consistently only when transitioning from preferred activities (like art) to non-preferred activities (like math), signaled by the teacher pointing to the visual schedule. The student rarely tantrums during other transitions. The analyst notes the student appears highly motivated to avoid math work. The team wants to understand why the behavior occurs specifically during these signaled transitions. Which principle primarily explains the *specific situational occurrence* of the tantrums?

A BCBA has a long-standing personal friendship with Ms. Jones. Ms. Jones requests the BCBA conduct a functional behavior assessment (FBA) and design a behavior intervention plan (BIP) for her son, who attends the same school where the BCBA consults part-time. The BCBA is qualified and has availability. However, the school district employs another qualified BCBA who could take the case. The BCBA is concerned about maintaining objectivity due to the friendship. What is the *most* ethically appropriate action for the BCBA to take?

Maria, a behavior analyst, observes a client in a group home who refuses to take medication when offered by Nurse Jones during evening shifts, often engaging in avoidance behaviors. The same client readily accepts medication from Nurse Patel during morning shifts and from Nurse Jones during daytime activities. The medication and setting are identical across shifts. Which outcome demonstrates stimulus discrimination?