Glossary

Plain-language definitions for every term you will encounter. Browse by letter or filter by category.

Behavior Terms44Sensory Processing30Autism Spectrum33Therapy Types35Educational Terms34Self-Regulation26

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5

A

Antecedent

What happens immediately before a behavior occurs. Identifying antecedents helps predict and prevent challenging behaviors.

Behavior Terms

ABC Data

A method of recording the antecedent, behavior, and consequence for each instance of a target behavior. Used to identify patterns and functions.

Behavior Terms

Attention

A function of behavior where the person engages in a behavior to gain social attention from others, whether positive or negative.

Behavior Terms

ABA

Applied behavior analysis. A scientific approach to understanding and changing behavior. It is the most widely researched intervention for autism spectrum disorder.

Therapy Types

Applied Behavior Analysis

The full name for ABA. A discipline that applies principles of learning and behavior to improve socially significant behaviors.

Therapy Types

Auditory Processing

The way the brain interprets and makes sense of sound information. Difficulties can affect following directions, learning, and functioning in noisy environments.

Sensory Processing

Autonomic Nervous System

The part of the nervous system that controls involuntary body functions like heart rate, breathing, and digestion. Plays a central role in stress responses.

Self-Regulation

Aide

Another term for a paraprofessional. A staff member who supports students with disabilities in the classroom or other school settings.

Educational Terms

AAC

Augmentative and alternative communication. Tools and strategies that supplement or replace spoken language, including picture boards, sign language, and speech-generating devices.

Therapy Types

Antecedent Intervention

A proactive strategy that modifies the environment or situation before a behavior occurs to prevent the behavior from happening.

Behavior Terms

Autistic Burnout

A state of chronic exhaustion, loss of skills, and reduced functioning experienced by autistic individuals, often caused by prolonged masking and overwhelming demands.

Autism Spectrum

Accommodation

A change in how a student accesses learning or demonstrates knowledge without changing the content or expectations. Examples include extra time and preferential seating.

Educational Terms

Autism Spectrum Disorder

A neurodevelopmental condition characterized by differences in social communication, sensory processing, and patterns of behavior. Abbreviated ASD.

Autism Spectrum

ASD

Abbreviation for autism spectrum disorder. The current diagnostic term used in the DSM-5.

Autism Spectrum

B

Behavior

Any observable and measurable action performed by a person. In behavioral analysis, behavior is described in objective, specific terms.

Behavior Terms

Backward Chaining

Teaching the last step of a task sequence first so the person always experiences completion, then working backward through earlier steps.

Therapy Types

BCBA

Board Certified Behavior Analyst. A graduate-level professional who designs and oversees ABA programs.

Therapy Types

Board Certified Behavior Analyst

The full title for BCBA. A professional certified by the Behavior Analyst Certification Board to practice applied behavior analysis.

Therapy Types

BIP

Behavior intervention plan. A written document that describes strategies for preventing and responding to challenging behaviors based on a functional behavior assessment.

Behavior Terms

Behavior Intervention Plan

The full name for BIP. A proactive plan that includes prevention strategies, teaching replacement behaviors, and response procedures.

Behavior Terms

Baseline

The level of a behavior before any intervention begins. Establishing a baseline allows measurement of whether an intervention is effective.

Behavior Terms

Behavior Contract

A written agreement between a student and teacher that specifies expected behaviors, rewards for meeting expectations, and consequences for not meeting them.

Behavior Terms

Body Check

A mindfulness technique where a person pauses to notice how their body feels, identifying areas of tension, energy level, and emotional state.

Self-Regulation

Behavioral Momentum

A strategy of presenting several easy or preferred tasks before a difficult demand, building compliance momentum that increases the likelihood of cooperation.

Behavior Terms

C

Consequence

What happens immediately after a behavior occurs. Consequences either increase or decrease the likelihood of the behavior happening again.

Behavior Terms

Chaining

Teaching a multi-step task by linking individual steps together. Each step in the chain serves as a cue for the next.

Therapy Types

Co-Regulation

The process by which a calm, regulated adult helps a child return to a regulated state through their presence, tone, and actions.

Self-Regulation

Cognitive Flexibility

The ability to shift thinking, switch between tasks, or adapt to new rules or expectations. Difficulty with flexibility can lead to rigidity and distress during transitions.

Autism Spectrum

Comic Strip Conversation

A visual tool using simple drawings and speech bubbles to illustrate a social interaction and help the person understand what people may be thinking and feeling.

Educational Terms

Calm Down Corner

A designated space in a classroom or home where a child can go to use calming strategies and self-regulate when feeling overwhelmed.

Self-Regulation

Coping Strategy

A technique or action a person uses to manage stress, strong emotions, or sensory overload. Examples include deep breathing, counting, and using a fidget tool.

Self-Regulation

Compression Clothing

Tight-fitting garments that provide consistent deep pressure to the body. Can help with body awareness and regulation for individuals who seek proprioceptive input.

Sensory Processing

Chew Tool

A safe, durable object designed for chewing, providing oral sensory input. Used as a replacement for chewing on clothing, pencils, or other non-food items.

Sensory Processing

Choice Board

A visual display of options that allows a person to make choices about activities, reinforcers, or strategies. Promotes autonomy and reduces frustration.

Educational Terms

D

E

Escape

A function of behavior where the person engages in a behavior to avoid or get away from a non-preferred activity, demand, or situation.

Behavior Terms

Extinction

Withholding reinforcement for a previously reinforced behavior, which eventually leads to a decrease in that behavior.

Behavior Terms

Extinction Burst

A temporary increase in the frequency, intensity, or duration of a behavior when reinforcement is first removed. The behavior often gets worse before it gets better.

Behavior Terms

Emotional Regulation

The ability to monitor, evaluate, and modify emotional reactions to meet situational demands and personal goals.

Self-Regulation

Echolalia

The repetition of words or phrases spoken by others. Can be immediate (repeating right away) or delayed (repeating hours or days later). May serve a communicative function.

Autism Spectrum

Executive Function

A set of cognitive processes that include working memory, flexible thinking, and self-control. Challenges with executive function are common in autism and ADHD.

Autism Spectrum

Environmental Modification

Changing aspects of the physical environment to support desired behavior and reduce triggers for challenging behavior.

Behavior Terms

Elopement

The act of leaving a designated area or running away without permission. A significant safety concern, especially for children who may not understand danger.

Behavior Terms

Emotional Vocabulary

The words a person has available to identify and describe their feelings. Expanding emotional vocabulary supports self-awareness and communication about internal states.

Self-Regulation

Escalation Cycle

The predictable pattern of increasing agitation that leads to a meltdown or crisis, typically progressing through calm, trigger, agitation, peak, and recovery phases.

Self-Regulation

F

Function of Behavior

The underlying reason a behavior occurs. The four main functions are escape, attention, access to tangibles, and sensory stimulation.

Behavior Terms

Forward Chaining

Teaching the first step of a task sequence and prompting through the rest, then gradually requiring the person to complete more steps independently.

Therapy Types

FBA

Functional behavior assessment. A process for identifying the function or purpose of a challenging behavior to develop an effective intervention plan.

Behavior Terms

Functional Behavior Assessment

The full name for FBA. A systematic process of gathering information to determine why a behavior occurs.

Behavior Terms

Frequency Data

A count of how many times a behavior occurs within a specific time period.

Behavior Terms

Fight or Flight

The body's automatic stress response that prepares a person to either confront or flee from a perceived threat. Activated by the sympathetic nervous system.

Self-Regulation

Freeze Response

A stress response where the body becomes immobile and the person may appear shut down or unresponsive. Often overlooked as a trauma or stress reaction.

Self-Regulation

FAPE

Free appropriate public education. A legal requirement under IDEA that all children with disabilities receive education at no cost that meets their individual needs.

Educational Terms

Free Appropriate Public Education

The full name for FAPE. Schools must provide special education and related services designed to meet the unique needs of each eligible child.

Educational Terms

First Then Board

A visual support showing two steps: first the current or non-preferred task, then the upcoming preferred activity. Motivates task completion and reduces anxiety.

Educational Terms

Functional Communication Training

Teaching a person to communicate their needs using appropriate methods (words, signs, pictures, devices) as a replacement for challenging behavior.

Therapy Types

Fidget Tool

A small object used to provide sensory input during tasks that require attention or self-regulation. Examples include stress balls, putty, and spinner rings.

Sensory Processing

Floortime

A developmental intervention (DIR/Floortime) that follows the child's lead during play to build social-emotional skills and expand thinking and communication.

Therapy Types

G

H

I

Incidental Teaching

A naturalistic teaching strategy where the therapist uses the child's own initiations and interests as opportunities to teach language and social skills.

Therapy Types

Interval Recording

A data collection method where an observation period is divided into equal intervals and the observer records whether the behavior occurred during each interval.

Behavior Terms

Interoception

The sense that provides awareness of internal body states such as hunger, thirst, temperature, pain, and the need to use the bathroom.

Sensory Processing

Inhibition

The ability to stop or control automatic responses and impulses. Weak inhibition can lead to impulsive actions and difficulty waiting.

Autism Spectrum

IEP

Individualized Education Program. A legally binding document that outlines the special education services, goals, and accommodations for a student with a disability.

Educational Terms

Individualized Education Program

The full name for IEP. Developed by a team including parents, teachers, and specialists, it is reviewed and updated annually.

Educational Terms

Inclusion

The practice of educating students with disabilities in the general education classroom with appropriate supports and services.

Educational Terms

IDEA

Individuals with Disabilities Education Act. The federal law that governs special education services and ensures FAPE for children with disabilities in the United States.

Educational Terms

Identity-First Language

Language that places the identity before the person, such as 'autistic person.' Many autistic adults prefer this phrasing.

Autism Spectrum

J

L

M

Meltdown

An intense response to overwhelming sensory or emotional input where the person temporarily loses behavioral control. Unlike a tantrum, a meltdown is not goal-directed.

Behavior Terms

Modeling

Demonstrating the desired behavior for the person to imitate. Can be done in person or through video.

Therapy Types

Momentary Time Sampling

A data collection method where the observer checks whether the behavior is occurring at the exact moment each interval ends.

Behavior Terms

Mainstreaming

Placing a student with a disability in a general education classroom for part or all of the school day. The student may still receive separate services.

Educational Terms

Masking

The practice of consciously or unconsciously suppressing autistic traits to appear neurotypical in social situations. Can be exhausting and affect mental health.

Autism Spectrum

Modification

A change to what a student is expected to learn or demonstrate, such as reduced assignment length or simplified content. Different from an accommodation.

Educational Terms

Mand

A verbal behavior term for a request or demand. Teaching mands is often the first step in ABA-based communication programs.

Therapy Types

Maintenance

The continued performance of a skill over time after teaching has ended. Skills that are not maintained must be re-taught or practiced.

Therapy Types

Movement Break

A brief period of physical activity used to help a person regulate their arousal level and refocus. Especially helpful for children who are sensory seeking.

Sensory Processing

N

O

P

Positive Reinforcement

Adding a desired stimulus after a behavior to increase the chance the behavior will happen again. Example: giving praise after a child follows a direction.

Behavior Terms

Punishment

Any consequence that decreases the likelihood of a behavior occurring again. Behavioral science uses this term technically, not as a moral judgment.

Behavior Terms

Prompt

A cue or assistance given to help a person perform a desired behavior. Prompts range from most intrusive (physical) to least intrusive (gestural).

Therapy Types

Prompt Fading

The systematic reduction of prompts over time so the person can perform the behavior independently.

Therapy Types

Prompt Hierarchy

A structured sequence of prompts arranged from most to least supportive: physical, verbal, gestural, visual, and independent.

Therapy Types

Physical Prompt

A prompt where the therapist physically guides the person through the desired movement or action. The most intrusive level of prompting.

Therapy Types

Pivotal Response Training

A naturalistic behavioral intervention that targets pivotal areas of development such as motivation, self-management, and responsivity to multiple cues.

Therapy Types

Proprioception

The sense that provides awareness of body position and movement. Proprioceptive input comes from muscles and joints and can be calming and organizing.

Sensory Processing

Parasympathetic

The branch of the autonomic nervous system responsible for calming the body after stress. Often called the rest-and-digest system.

Self-Regulation

Polyvagal Theory

A theory by Stephen Porges proposing that the vagus nerve has multiple branches that regulate different social engagement and survival responses.

Self-Regulation

Perseveration

The persistent repetition of a word, phrase, topic, or behavior beyond the point where it serves a purpose. Common in autism and some neurological conditions.

Autism Spectrum

Planning

The executive function skill of identifying steps needed to reach a goal and organizing them in the correct order.

Autism Spectrum

Power Card

A motivational strategy that uses a person's special interest to teach a social skill or behavioral expectation. Presented on a card the person can carry.

Educational Terms

Pragmatic Language

The social use of language, including taking turns in conversation, staying on topic, understanding nonliteral language, and adjusting communication to the listener.

Autism Spectrum

Perspective Taking

The cognitive skill of understanding a situation from another person's point of view. Related to but distinct from empathy.

Autism Spectrum

Paraprofessional

A trained classroom aide who provides direct support to students with disabilities under the supervision of a certified teacher or specialist.

Educational Terms

PECS

Picture Exchange Communication System. A communication system where the person gives a picture to a communication partner to request items or express needs.

Therapy Types

Planned Ignoring

A strategy where attention-maintained behavior is intentionally not reinforced by withholding a response. Must be paired with reinforcement of appropriate behavior.

Behavior Terms

Priming

Previewing an upcoming activity, environment, or expectation to reduce anxiety and increase success. Gives the person time to prepare mentally.

Educational Terms

PDA

Pathological demand avoidance. A profile of autism characterized by an extreme need to avoid demands, driven by anxiety rather than defiance.

Autism Spectrum

Person-First Language

Language that places the person before the disability, such as 'person with autism.' Some families and organizations prefer this phrasing.

Autism Spectrum

Proactive Strategy

An approach that prevents challenging behavior before it occurs by modifying the environment, schedule, or expectations.

Behavior Terms

Positive Behavior Support

A framework that emphasizes preventing challenging behavior through environmental design, teaching skills, and reinforcing appropriate behavior. Abbreviated PBS.

Behavior Terms

Processing Speed

The rate at which a person takes in information, makes sense of it, and responds. Slower processing speed is common in autism and other neurodevelopmental conditions.

Autism Spectrum

R

Reinforcement

Any consequence that increases the likelihood of a behavior occurring again. Can be positive (adding something) or negative (removing something).

Behavior Terms

RBT

Registered Behavior Technician. A paraprofessional who implements ABA programs under the supervision of a BCBA.

Therapy Types

Registered Behavior Technician

The full title for RBT. A trained technician who provides direct ABA therapy services.

Therapy Types

Reciprocity

The back-and-forth exchange in social interactions, including conversation, play, and emotional sharing. Difficulty with reciprocity is a core feature of autism.

Autism Spectrum

Resource Room

A separate classroom where students with disabilities receive specialized instruction for part of the school day, then return to general education for the remainder.

Educational Terms

Related Services

Support services required for a child to benefit from special education, including occupational therapy, speech therapy, counseling, and transportation.

Educational Terms

Replacement Behavior

A socially appropriate behavior taught to serve the same function as a challenging behavior. For example, teaching a child to request a break instead of throwing materials.

Behavior Terms

Regulation Strategy

A specific technique used to return to a calm, alert state. Examples include deep breathing, movement breaks, compression, and using sensory tools.

Self-Regulation

Recovery Phase

The period after a meltdown or crisis when the person is physically and emotionally spent and gradually returns to a regulated state. Not an appropriate time for teaching.

Self-Regulation

Reinforcement Schedule

The pattern determining when and how often reinforcement is delivered. Includes continuous (every time) and intermittent (some of the time) schedules.

Behavior Terms

Reactive Strategy

An approach used to respond to challenging behavior after it occurs, with the goal of ensuring safety and helping the person return to a calm state.

Behavior Terms

Restorative Practice

An approach to conflict resolution and behavior management that focuses on repairing relationships and understanding impact rather than punishment.

Educational Terms

S

Sensory Function

A function of behavior where the behavior itself provides internal sensory reinforcement, such as stimming for the feeling it produces.

Behavior Terms

Shaping

Reinforcing successive approximations of a target behavior. Used to build new skills by reinforcing closer and closer attempts at the desired behavior.

Therapy Types

Sensory Processing

The way the nervous system receives, organizes, and responds to sensory input from the environment and the body.

Sensory Processing

Sensory Integration

The neurological process of organizing sensory information from the body and environment so it can be used for functional behavior and learning.

Sensory Processing

Sensory Diet

A personalized plan of sensory activities scheduled throughout the day to help a person maintain an optimal level of arousal and regulation.

Sensory Processing

Sensory Input

Any information the nervous system receives through the senses, including touch, movement, sight, sound, taste, smell, and internal body signals.

Sensory Processing

Sensory Seeking

A pattern where a person actively pursues intense sensory experiences, such as spinning, crashing, loud sounds, or strong flavors.

Sensory Processing

Sensory Avoiding

A pattern where a person actively avoids certain sensory experiences because they feel overwhelming or uncomfortable.

Sensory Processing

Sensory Modulation

The ability to regulate responses to sensory input, matching the intensity of the response to the demands of the situation.

Sensory Processing

Sensory Discrimination

The ability to distinguish between different types of sensory input, such as telling the difference between similar textures or sounds.

Sensory Processing

Self-Regulation

The ability to manage one's emotional state, arousal level, and behavior in response to internal and external demands.

Self-Regulation

Sympathetic

The branch of the autonomic nervous system that activates the fight-or-flight response, increasing heart rate, blood pressure, and alertness.

Self-Regulation

Stimming

Self-stimulatory behavior such as hand flapping, rocking, spinning, or repeating sounds. Stimming can serve sensory regulation, emotional expression, or communication purposes.

Autism Spectrum

Self-Stimulatory Behavior

The full term for stimming. Repetitive movements or vocalizations that provide sensory input or emotional regulation.

Autism Spectrum

Stereotypy

Repetitive, seemingly purposeless movements or vocalizations. In behavioral terms, stereotypy is behavior maintained by automatic reinforcement.

Autism Spectrum

Special Interest

An intense, focused area of interest that an autistic person may pursue with exceptional depth and enthusiasm. Can be a source of joy, motivation, and learning.

Autism Spectrum

Social Story

A short, personalized story that describes a social situation, expected behaviors, and perspectives. Developed by Carol Gray to teach social understanding.

Educational Terms

Social Skills Group

A structured small-group setting where individuals practice social interaction skills with peers, guided by a therapist or teacher.

Educational Terms

Self-Contained Classroom

A special education classroom where students with disabilities receive most or all of their instruction. Typically has a lower student-to-teacher ratio.

Educational Terms

Speech Therapy

A related service that addresses communication challenges including articulation, language comprehension, expression, fluency, voice, and pragmatic language.

Therapy Types

Sensory Overload

A state where the brain receives more sensory input than it can process, leading to distress, shutdown, or meltdown.

Sensory Processing

Sensory Room

A specially designed space with equipment and materials that provide controlled sensory experiences, used for regulation and calming.

Sensory Processing

Safety Plan

A written plan that addresses specific safety concerns such as elopement, self-injury, or aggression, including prevention strategies and crisis response procedures.

Behavior Terms

Self-Injurious Behavior

Behavior where a person causes physical harm to their own body, such as head banging, biting, or scratching. Requires careful functional assessment.

Behavior Terms

Scripting

Repeating lines from movies, books, or conversations, often in context or as a communication attempt. A form of delayed echolalia.

Autism Spectrum

Spoon Theory

A metaphor where daily energy is represented by spoons. Each activity costs spoons, and once they are gone, the person has no energy left. Used widely in disability communities.

Self-Regulation

Social Communication

The use of language in social contexts, including understanding and using nonverbal cues, taking turns, and adjusting language for different audiences.

Autism Spectrum

Sensory Profile

An assessment tool that measures how a person processes and responds to sensory information across different senses and situations.

Sensory Processing

Spectrum

The concept that autism presents differently in every individual, with varying strengths and challenges across social, sensory, and behavioral domains.

Autism Spectrum

Social Narrative

A broader term for stories written to teach social understanding, including social stories, narrative interventions, and scripted scenarios.

Educational Terms

Structured Teaching

An educational approach that uses visual organization of the environment, schedules, and tasks to support learning and independence. Associated with the TEACCH method.

Educational Terms

Sensory Break

A planned pause in activity to provide sensory input that helps the person return to a regulated state. Part of a proactive sensory diet.

Sensory Processing

T

Tantrum

A goal-directed behavior where a child acts out to get something they want or avoid something they dislike. Tantrums stop when the goal is met or the audience leaves.

Behavior Terms

Tangible

A function of behavior where the person engages in a behavior to gain access to a preferred item or activity.

Behavior Terms

Task Analysis

Breaking a complex skill or activity into smaller, teachable steps. Each step is defined clearly so it can be taught and measured.

Therapy Types

Tactile

Relating to the sense of touch. Tactile processing affects how a person responds to textures, temperatures, pressure, and pain.

Sensory Processing

Time Management

The ability to estimate, allocate, and monitor time effectively. Visual timers and schedules can support individuals who struggle with time awareness.

Autism Spectrum

Transition

The process of moving from one activity, setting, or routine to another. Transitions are a common source of difficulty for autistic individuals.

Educational Terms

Theory of Mind

The ability to understand that other people have their own thoughts, beliefs, feelings, and perspectives that may differ from one's own.

Autism Spectrum

Token Economy

A reinforcement system where tokens are earned for desired behaviors and exchanged for preferred items or activities. Provides visual tracking of progress.

Behavior Terms

Transition Warning

A verbal, visual, or auditory signal given before a transition to help the person prepare for the upcoming change. Reduces transition-related distress.

Educational Terms

Tact

A verbal behavior term for labeling or naming something in the environment. Tacts are taught after mands in many ABA programs.

Therapy Types

TEACCH

Treatment and Education of Autistic and Related Communication Handicapped Children. A program that emphasizes structured teaching and visual supports.

Educational Terms

Trigger

A specific stimulus, event, or situation that predictably leads to a stress response or challenging behavior. Identifying triggers is a key step in prevention.

Self-Regulation

V

Verbal Prompt

A spoken cue that tells or reminds the person what to do. Less intrusive than a physical prompt.

Therapy Types

Visual Prompt

A picture, symbol, written word, or visual cue that supports the person in completing a task or following a routine.

Therapy Types

Vestibular

The sense that detects head position and movement, providing information about balance and spatial orientation. Located in the inner ear.

Sensory Processing

Visual Processing

The way the brain interprets visual information. Challenges can affect reading, handwriting, spatial awareness, and navigating the environment.

Sensory Processing

Vagus Nerve

The longest cranial nerve, running from the brain to the abdomen. It plays a key role in the parasympathetic response and is central to polyvagal theory.

Self-Regulation

Visual Schedule

A series of pictures, symbols, or words displayed in order to show the sequence of activities or steps in a routine. Reduces anxiety about transitions and expectations.

Educational Terms

Video Modeling

A teaching technique where the person watches a video of someone (or themselves) performing a target skill, then practices it. Effective for social, play, and daily living skills.

Educational Terms

Visual Timer

A timer that shows the passage of time visually, often with a colored section that shrinks. Helps individuals who struggle with abstract time concepts.

Educational Terms

Verbal Behavior

An approach to language training based on B.F. Skinner's analysis of language, categorizing communication by function (mand, tact, echoic, intraverbal).

Therapy Types

W

Z

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