RBT Mock Exam Comprehensive Study Guide

Concepts of Measurement and Data Collection

Measurement in Behavior Analysis is categorized into continuous and discontinuous methods. Frequency is a continuous measurement representing the count of a behavior; devices such as a stopwatch, your hand for tallying, or a clicker counter are suitable for tracking it. Rate is a specific type of frequency measurement that includes a time component, such as tracking that a client elopes $5$ times per hour, making it generally more informative than frequency alone. Duration measures the total length of time a behavior occurs, such as recording how long it takes a client to get dressed or the duration of a $2\,hour$ car ride. Latency measures the time elapsed from the presentation of a demand or discriminative stimulus ($S^D$) to the first instance of the behavior. Inter-response time (IRT) measures the time that passes between two consecutive occurrences of the same behavior, such as the time between bites of food or the time between placing separate orders on a website.

Discontinuous measurement procedures do not capture every instance of behavior. Interval recording includes partial interval, whole interval, and momentary time sampling. Whole interval recording typically underestimates the occurrence of behavior because the behavior must occur for the entire duration of the interval to be recorded. In contrast, momentary time sampling involves checking for the behavior at the exact end of a pre-determined interval, such as a teacher looking up every $8\,minutes$ to see which of $10$ students are awake. Permanent product recording is a measurement method that evaluates the resulting impact or product the behavior has on the environment, such as checking a grocery list to see if items were purchased, viewing a completed painting, or measuring the "production" of a task after the behavior has occurred.

Data is visually represented using graphs, with line graphs being the most common in the field. On a standard line graph, the x-axis represents time (such as sessions or days) and the y-axis represents the behavior (such as count or percentage). Baseline data refers specifically to information collected before an intervention or treatment is implemented. It is a professional requirement for Registered Behavior Technicians (RBTs) to record session notes after each session. These notes must be objective, describing actual events such as "the client manded $8$ times independently," rather than subjective or mentalistic interpretations like "the client was angry" or "the client felt anxious."

Functional Assessment and the Role of the RBT

The primary role of a Registered Behavior Technician (RBT) is the implementation of treatment plans and behavior reduction programs. In the context of functional assessments, the RBT's role is to assist the Board Certified Behavior Analyst (BCBA) or supervisor with the assessment process, rather than conducting it independently or criticizing the design. Before any data can be collected, it is essential that target behaviors are defined in observable and measurable terms. An observable definition describes physical actions, such as "Susie snapped her pencil in half," whereas non-observable definitions rely on mentalisms or diagnoses, such as "Susie snapped her pencil because she has autism."

Understanding the functions of behavior is critical for effective intervention. There are four primary functions of behavior: Tangible (access to items), Automatic (sensory reinforcement), Attention (social interaction), and Escape (avoidance of demands). For example, if a child begins banging his fists when a caregiver shifts attention to a sibling, the hypothetical function is attention. If a client screams to avoid a task, the function is escape. A repertoire refers to the entire set of skills a client possesses. When an RBT is unsure how to run a specific program within a client's repertoire, they must consult with their supervising BCBA immediately.

Skill Acquisition and Teaching Procedures

Skill acquisition involves various strategies to teach new behaviors. Discrete Trial Training (DTT) is a structured teaching method characterized by a clear antecedent, a behavior, a consequence, and a brief pause before the next trial. In contrast, incidental teaching (also known as Natural Environment Teaching or NET) is initiated by the client and occurs in more natural settings. When teaching complex skills, a task analysis is used to break down the skill into smaller, manageable components. Chaining is then used to teach these steps. Forward chaining teaches the steps in order, while backwards chaining starts by teaching the final step first (e.g., teaching a child to dry their hands as the first step in a hand-washing chain). Total task chaining involves prompting the client through the entire sequence until they reach a specific target step.

Shaping is the process of providing reinforcement for successive approximations of a target behavior. For example, when teaching the word "bubble," an RBT might first reinforce "b," then only "bub," and finally only the full word "bubble," as the requirements for reinforcement increase. Discrimination training involves reinforcing a specific response in the presence of one stimulus but not another, such as reinforcing a client for touching a blue card but not a green card. Generalization occurs when a client can perform a learned skill in a new environment or with different people, such as learning to make purchases at a clinic and then successfully buying lunch at school.

Prompting is an antecedent intervention used to evoke a correct response. Response prompts include verbal instructions, modeling, and full physical guidance. Prompts should be delivered after the $S^D$ but before the response. Prompt fading is the systematic removal of these prompts to move the client toward independence, such as gradually removing the letters of a name a child is learning to trace. Maintaining a skill over time after the formal intervention has ended is known as maintenance.

Behavior Reduction and Reinforcement Schedules

Reinforcement is a stimulus that, when presented following a behavior, increases the future frequency of that behavior. Positive reinforcement involves the addition of a stimulus (such as praise or a treat), while negative reinforcement involves the removal of an aversive stimulus (such as scratching an itch to remove the sensation or opening a window when hot). Primary reinforcers are unconditioned and relate to biological needs like food, water, and sleep. Secondary reinforcers are conditioned through pairing. Punishers decrease the future frequency of a behavior; unconditioned punishers include physical discomfort like freezing temperatures or electric shocks. Negative punishment involves taking something away to decrease behavior, such as removing dolls when a child throws a tantrum.

Reinforcement schedules dictate how often a behavior is reinforced. A Continuous Reinforcement Schedule (FR1) provides reinforcement for every single correct response and is best for teaching new skills. Intermittent schedules are used to maintain behaviors and make them more resistant to extinction. A Variable Ratio (VR) schedule, which is based on an average number of responses (e.g., VR3), is the most productive and resistant to extinction. A Fixed Ratio (FR) schedule provides reinforcement after a set number of responses (e.g., FR5), while interval schedules are based on the passage of time (e.g., FI3).

Differential reinforcement involves reinforcing one set of behaviors while withholding reinforcement for others. Differential Reinforcement of Incompatible Behavior (DRI) reinforces a behavior that cannot occur at the same time as the problem behavior (e.g., reinforcing sitting to replace wandering). Differential Reinforcement of Alternative Behavior (DRA) reinforces a functional alternative (e.g., teaching a child to ask for a break via Functional Communication Training or FCT). Differential Reinforcement of Other Behavior (DRO) reinforces the absence of a behavior for a specific duration. Extinction is the process of withholding all reinforcement for a previously reinforced behavior. This often leads to an extinction burst, which is a temporary increase in the frequency or intensity of the behavior, such as a student pounding a steering wheel when a car fails to start.

Verbal Operants and Communication

Verbal behavior is categorized into functional units called operants. A Mand is a request or a demand, such as a student asking, "May I go to the bathroom?" A Tact is a label or a comment about something in the environment, such as a child pointing at a cow and saying "cow." An Echoic is a verbal operant where the speaker repeats what someone else said, such as a child repeating "put on your shoes" after a parent says it. An Intraverbal is a response to the verbal behavior of others that does not involve imitation, such as answering "4!" when a teacher asks "What is 2+2?"

Ethics and Professionalism

Registered Behavior Technicians must adhere to strict ethical codes. Dual relationships, such as babysitting for a client or accepting social invitations (e.g., a golf trip), are strictly prohibited as they create conflicts of interest and compromise professional boundaries. When offered gifts or lunch by parents, RBTs should politely decline and inform their supervisor. Communication with parents should be professional and avoid technical jargon; RBTs should use terminology the parent can understand. If a parent asks for training or an opinion on a non-scientific treatment (like a specific diet), the RBT should refer them to the supervising BCBA.

Legal and regulatory compliance is mandatory. If an RBT suspects abuse, they must contact relevant authorities, follow organization policies, and consult their supervisor. In clinical practice, RBTs must respect client rights; for instance, it is inappropriate to implement a behavior reduction plan for a legal adult (like a 21-year-old smoking) without consulting them first. When receiving feedback from a BCBA, the RBT should use it professionally to improve their clinical skills. If an error is made during a session, such as reinforcing the wrong behavior, the RBT should notify their supervisor immediately and request additional training. A crisis or emergency situation is defined as any situation where the client, the technician, or others are in imminent danger.