Overview of Verbal Behavior
Debra Paone, Ph.D., BCBA
Douglass Developmental Disabilities Center
Verbal Behavior
Focus on teaching functional language
Language is a behavior that can be shaped and reinforced
Based on Skinner¡¯s (1957) Verbal Behavior
Verbal Behavior
Why is it important?
- Almost always reduces challenging behavior because it teaches the child to request (mand) for those things that he/she wants or needs
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Verbal Behavior Classification System
Verbal operants
Echoic: imitation ¨C saying juice after someone else says juice ¨C reinforcement is social/not the juice
Mand: request ¨C saying juice when thirsty and you want juice ¨C the reinforcement is obtaining the juice
Verbal Behavior Classification System
ABA: Key Terms
Three Term Contingency
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Antecedent: state, condition, or change to the environment prior to a behavior
Behavior: the response emitted
Consequence: state, condition or change of the environment after a behavior
The Fourth Term?
Motivative Operations
Effects the level of motivation the student has to acquire reinforcement
Alters the value of the reinforcement
The strength of an MO varies and changes
Pairing
Establish an environment that is associated with good things
The child will receive access to his/her preferred items when he/she approaches the work area and instructor
The instructor and the work area will become associated with good things
The goal of pairing is for the child want to go to the work area or to be with the instructor
Mands
Mands
Definition: a type of verbal behavior where the response is controlled by a motivational variable (MO)
Deprivation/Satiation
A mand names its reinforcer
Allows the individual to spontaneously request needed or desired items
A mand benefits the speaker by obtaining specific reinforcement ¨C satisfying the MO
Examples of Mands
Requesting a drink when thirsty ("I want juice")
Asking for a break
Problem behavior: Yelling, hitting, throwing objects
Giving a jar to someone to open ("Help")
Asking, "Where is it?"
Importance of Mand Training
Mand Training¡.
Present an opportunity or wait for the child to show interest in something.
Withhold the desired item or an essential item required to complete task (crayon, straw, remote)
Model the mand, wait 2-3 seconds for response
Immediately reward the child with the object after the mand or an approximation of the mand is given
Systematically add new targets
Train in natural environments
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Teaching First Words as Mands
Existing motivation/interests
Consumable
Short duration of contact
Easy to remove from student
Easy to deliver
Easy to deliver on multiple occasions
Reinforcers that always seem strong
Teaching First Words¡.
Avoid words that have little communicative value (more, yes, no, please)
Avoid too general words (i.e., more)
Choosing First Response Forms
Verbal:
-Echolalic
-Exhibiting behavior that we can
use to teach them to
functionally communicate
First Response Forms¡
PECS:
-Strong visual-perceptual skills
-Weak auditory skills
-Nonverbal
-Beginning of mand training for
learners who are vocal but not
imitating
-Fade pictures quickly
-Difficulty imitating or producing series of
movements that would require signs
First Response Forms¡.
Sign:
-Weak visual-perceptual skills
-Don¡¯t attend to pictures
-Strong motor imitation skills
-Families who have difficulty
organizing pictures for PECS
Mand Training
Mand Training
Mands
Mand training
Mand for information
What?
Contrive situations
Examples: With hands behind your back say, "I have a surprise for you!"
Hold and shake a bag ¨C "There is something special for you in here!"
"We are going to do something fun now!"
Initially, you will be prompting the mand for information, "What is it?"
Mand for information
Data for Manding Sessions
Track both prompted and independent mands
Over time independent mands should increase
Can develop goal for # of mands in a session (i.e., minimum 1/minute)
Benefits of Mand Training
Parent/Instructor always knows what will function as a reinforcer
Decreases challenging behaviors
-Reduce need to request through
disruptive behaviors
-Appropriate requesting skills
reduce learner frustration
Echoics
Imitation
Under control of someone¡¯s vocal behavior
Parent: Say hi
Child: Hi
Use to teach other verbal operants
While opening box with favorite snack, parent says, "Open." Child says, "Open."
Echoics¡
Use as a teaching tool
To acquire new language
To improve articulation
Used to teach other verbal operants
Mands, tacts, intraverbals
May use for specific sounds/phrases
Tacts
Under control of visual (nonverbal) stimulus
Naming/identifying nonverbal stimuli (objects, events, actions)
Includes skills of retrieval & articulation
Increase the capacity to comment
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Teaching Tacts
After 5-10 mands for reinforcers have been established
Cooperation with instructors
Some echoic and imitation skills
Emerging matching to sample skills
Concurrent with teaching receptive skills
Tacts¡
Increases ability to demonstrate joint attention (I see a ___; Look, it is a __)
Increases labeling skills
Teaching Tacts
Teaching Tacts¡
Begin teaching tacts with words that have been acquired as mands
If learner has a strong echoic repertoire, can consider starting with new words
Begin with actual objects present in learner¡¯s environment
Move to pictures as quickly as possible
Teaching Tacts¡
Instruction, "What is this?; What do you see?"
When features have been acquired, begin to build on tacts
Tell me everything you see
I see a big, brown bear
Generalization procedures should include different examples, pictures, carrier phrases, etc.
Intraverbals (Conversation)
Under control of another person¡¯s verbal behavior; the antecedent stimulus is another person¡¯s verbal behavior
Different from the echoic in that it does not exactly match another¡¯s verbal behavior
Definition: behavior that allows a speaker to talk about objects and events even though those objects and events are not physically present
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Intraverbals¡
Includes answering questions and participating in conversations
Early intraverbals can include fill-in-the blank, beginning "wh" questions
Fill in songs; Fill in familiar phrases
Teaches staying on topic
Teaching Intraverbals
Many learners with autism can answer questions when item is present
Many learners are not able to respond when item is not present
Can use transfer procedures to teach
Transfer Procedures
A response the learner can already produce
Teaching learner to produce in same/similar response in another situation
Use as a starting point what the learner can already produce
Learner is more likely to repeat same behavior/say same word he previously did
Gradually add ¡®distance¡¯ between responses until learner can respond to new SD
Teaching Intraverbals¡
Tact to Intraverbal Transfer
I: "What do we play with?" (blocks present)
L: "Blocks"
I: (Puts blocks behind back) "What do we play with?"
L: "Blocks"
Teaching Intraverbals¡
Fill-in to Intraverbal Transfer
I: "We play with _____"
L: "Blocks"
I: What do we play with?"
L: "Blocks"
Teaching Intraverbals¡
Echoic to Intraverbal Transfer
I: "Say, car"
L: "Car"
I: "What do we ride in?"
L: "Car"
Mand to Tact Transfer¡
I: "What¡¯s this?"
L: "Ball"
I: "What do you want?"
L: "Ball"
For some learners tact trial could follow mand trial
Receptive to Tact Transfer
Physically assist child to touch desired item (physical prompt) or model correct response
Transfer receptive response to a label
I: "Touch the car"
L: "Car" while point to the car
I: "What¡¯s this?"
L: "Car"
Echo to Tact Transfer
Transfer a mastered response to a new condition
I: "Say car"
L: "Car"
I: "What¡¯s this?"
L: "Car"
Fill-in to Tact Transfer
If learner has used fill-ins in the past, this response can be transferred to the tact
Fill in responses have no requirement of a response from a learner
It is easier to use; helps avoid too many question when teaching language
I: "We wash hands in the ___"
Fill-in to Tact Transfer¡
L: "Sink"
I: "What¡¯s this?"
L: "Sink"
Feature, Function, Class
Function (what an object is used for)
-Point to the one you read
-Show me what you sleep in
Class (group or category)
-Show me what is clothing
-Touch all the animals
Prerequisites for Teaching FFC
Teach after learner has 50 words- mands, tacts, receptive discriminations
Teach after generalized tact and receptive responses
Teach after different carrier phrases for tacts/receptive disrciminations
Prerequisites for Teaching FFC¡..
Learner must be able to tact parts/adjectives associated with objects to avoid rote responding
Receptively identify and ideally label (i.e., whiskers, paws, furs, tail) before using features in FFC training
FFC: What to Target
Choose most relevant to learner¡¯s life at that time
Functions are typically developed first
Ask a typically developing child to describe a item to determine appropriate response
Adjectives, nouns, verbs can all be taught as classes
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FFC: Parts of Speech
Target is a verb=teach as a function
Target is a noun=teach as a feature or part
Target is an adjective/adverb=teach as a feature
No ¡®magic¡¯ number as to how many to teach
Natural Environment
Verbal operants that the child has acquired should be used in the natural environment
Set up the opportunity to use skills
Feature (big) ¨C mand for cookie ¨C ask which one (show one big and one small)
Getting a drink ¨C ask what do you drink from?
cup can be present or absent
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