Behavior Acquisition

A skill-acquisition program should identify the target response, prerequisites, materials, antecedent or instruction, prompting sequence, error correction, reinforcement schedule, data method, mastery criterion, and generalization plan. Review the program before teaching and ask for clarification when any step is unclear. Implementation fidelity matters because changes in wording, timing, prompts, or reinforcement can place behavior under unintended control. The technician implements and reports; the supervisor designs and revises.

Positive reinforcement adds a consequence after behavior; negative reinforcement removes or postpones a stimulus. In both cases, the defining effect is an increase in future behavior. A stimulus is not a reinforcer merely because it is edible, preferred, or praised by adults. Reinforcement should be contingent, timely, and matched to the response. Long delays can strengthen intervening behavior. During acquisition, every correct response may be reinforced. After stable performance, the supervisor may thin the schedule so the skill persists under more natural conditions.

Conditioned reinforcers acquire value through learning. Tokens are generalized conditioned reinforcers when they are exchangeable for several backup reinforcers. A token system should specify how tokens are earned, the exchange requirement, available backup choices, exchange timing, and any authorized response-cost rules. Do not give unearned tokens, remove earned tokens without an approved procedure, or change exchange prices during a session. Frequently check whether backup reinforcers remain valuable.

A discrete trial includes a clear antecedent, a response opportunity, a programmed consequence, data recording, and a brief pause before the next trial. Materials should be ready, attention secured as the program directs, and instructions delivered consistently. Score independent, prompted, incorrect, and no responses accurately. After an error, use the specified correction procedure rather than rapid repetition or an invented prompt. Keep the pace efficient while allowing the programmed response interval.

Naturalistic teaching embeds instruction in play, routines, conversation, or daily activities. The technician may capture an existing motivation or arrange the environment so the learner has a reason to communicate or act. The consequence is often naturally related to the response, such as opening bubbles after a request for bubbles. Naturalistic does not mean unplanned. Targets, prompts, reinforcement, data, and boundaries still come from the program. Follow the learner’s interests while preserving the teaching objective and respecting communication of choice or refusal.

A task analysis breaks a complex routine into observable steps. In forward chaining, the first step is taught first and later steps are assisted. In backward chaining, earlier steps are assisted and the final step is taught first. Total-task presentation gives the learner an opportunity to perform every step on each trial, with prompts as needed. Use the exact step definitions and prompting plan. Record performance step by step when required; a single “completed” score may hide where assistance is still needed.

Prompts may be physical, model, gestural, visual, positional, or verbal. Most-to-least prompting begins with strong assistance and fades it. Least-to-most provides an independent opportunity before adding progressively more help. Time delay increases the interval between the natural cue and the prompt. The goal is independent responding under the intended cue. Extra repetitions, habitual verbal hints, or predictable item positions can create prompt dependence. Deliver prompts exactly as specified and distinguish prompted responses in the data.

Stimulus control exists when a response occurs more reliably in the presence of the relevant antecedent. Discrimination training differentially reinforces responding to the correct stimulus. Rotate positions and examples so irrelevant features do not control responding. Shaping reinforces successive approximations to a terminal response. Advance criteria systematically after the current approximation is reliable enough, rather than changing expectations randomly. The supervisor establishes criteria and determines when to move forward.

Generalization means the skill occurs with new people, settings, materials, examples, or response forms. Program varied exemplars and common natural cues. Maintenance means the skill continues after intensive teaching or after time has passed. Periodic practice and naturally occurring reinforcement support maintenance. Accuracy alone may be insufficient when a skill must be performed efficiently. Fluency combines correct performance with a useful pace. Report narrow responding, slow performance, or loss of skill so the supervisor can adjust programming.