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Autism Teaching Methods: Applied Behavior Analysis and Verbal Behavior
Applied Behavior
Analysis, or ABA, is a method of teaching children with autism and
Pervasive Developmental Disorders. It is based on the premise that
appropriate behavior – including speech, academics and life skills – can
be taught using scientific principles. ABA assumes that children are
more likely to repeat behaviors or responses that are rewarded (or
"reinforced"), and they are less likely to continue behaviors that are
not rewarded. Eventually, the reinforcement is reduced so that the child
can learn without constant rewards.
Research shows
that ABA works for kids with autism. "Thirty years of research
demonstrated the efficacy of applied behavioral methods in reducing
inappropriate behavior and in increasing communication, learning, and
appropriate social behavior," according to a
U.S. Surgeon General's Report.
The most
well-known form of ABA is discrete trial training (DTT). Skills are
broken down into the smallest tasks and taught individually.
Discrete, or separate,
trials may be used to teach eye contact, imitation, fine motor skills,
self-help, academics, language and conversation. Students start with
learning small skills, and gradually learn more complicated skills as
each smaller one is mastered.
If a therapist is
trying to teach imitation skills, for example, she may give a command,
such as "Do this," while tapping the table. The child is then expected
to tap the table. If the child succeeds, he receives positive
reinforcement, such as a raisin, a toy or praise. If the child fails,
then the therapist may say, "No." The therapist then pauses before
repeating the same command, ensuring that each trial is separate or
discrete. The therapist also will use a
prompt - such as
physically helping the child tap the table - if the child responds
incorrectly twice in a row. This "no-no-prompt" method is used in some
traditional ABA programs.
However, many ABA
programs now use prompts for every trial, so the child is always correct
and always reinforced by praise or a toy. This technique is called
"errorless learning." The child will not be told "no" for mistakes but
rather will be guided to the correct response every time. The prompts
will be gradually reduced (or "faded," in ABA language), so the child will learn the correct response
on his own.
ABA may take place in the home or a school. A
consultant
or behavior analyst --
usually someone with a master's or doctoral degree in psychology -- often
supervises the therapy.
Some people
incorrectly assume that ABA only describes the method developed by
Dr. O. Ivar Lovaas, a pioneering researcher in the Psychology Department
at UCLA. Lovaas developed one form of ABA. In 1987, he published a study
showing that nine of the 19 preschoolers involved in intensive
behavioral intervention -- 40 hours per week of one-on-one therapy --
achieved "normal functioning" by first grade. Note: Several decades ago, Lovaas
described using mild physical punishment for severe behaviors during
therapy sessions. He later rejected such punishment, and current
behavior therapists do not use it. Dr. Lovaas, 83, died on Aug. 2, 2010.
ABA programs usually draw upon Lovaas's decades of
research, but they also may incorporate different methods and tools.
Applied
Verbal Behavior
or VB is the latest style of ABA. It uses B. F. Skinner's 1957 analysis
of Verbal Behavior to teach and reinforce speech, along with other
skills. Skinner described
categories of speech, or verbal behavior:
- Mands are requests
("I want a drink.")
- Echoes are
verbal imitations, ("Hi")
- Tacts are labels
("toy," "elephant") and
- Intraverbals are conversational
responses. ("What do you want?")
A VB program will focus on getting a child to realize that
language will get him what he wants, when he wants it. Requesting is
often one of the first verbal skills taught; children are taught to use
language to communicate, rather than just to label items. Learning how
to make requests also should improve behavior. Some parents say VB is a
more natural form of ABA.
Like many Lovaas ABA programs, a VB program
will use errorless teaching methods, prompts that are later reduced, and
discrete trial training. Behavior analysts Dr. Vincent Carbone,
Dr. Mark Sundberg and Dr. James Partington have helped popularize this approach.
One drawback to
ABA/VB: some school districts and insurance companies do not pay for
it, and it can be expensive for parents to fund. If you decide to pay
for it yourself, carefully research the credentials of anyone claiming
to be an ABA or VB consultant or experienced therapist. A consultant
should have, at a minimum, a master's degree in psychology or ABA, or
should be closely supervised by someone who does. When hiring
therapists, some families find volunteers or students willing to work
for lower pay in order to gain experience with autism.
ABA
and VB Web resources:
°
AutismWeb's
ABA and VB Directory of teaching materials.
° Large
organizations that set up and supervise home and group-based intensive
behavioral intervention programs include the
Lovaas Institute for Early Intervention, the
Center for Autism and Related Disorders and the
Carbone Clinic (VB). Check your area for smaller, regional programs.
°
Articles, Reports, and Opinion Pieces Describing Applied Behavior
Analysis (ABA) and the Research That Supports It.
Books about ABA:
 |
Let Me Hear Your Voice: A
Family's Triumph Over Autism
by Catherine Maurice. Maurice writes of the shock of her two
children's diagnoses and how they both recovered from autism.
Though the experience of complete recovery is not as common as
one would like, her book is a powerful testimony to the benefits
of ABA therapy. A good first book for parents of newly diagnosed
children. |
Free
downloads of ABA/VB exercises, which were developed by behavior analysts Dr. David Kuhn and
Dr. Stephanie Contrucci Kuhn, are available at
Play this Way Every Day.
The web site is run by a pediatrician for children with speech and
language disorders.
 |
Right from the Start: Behavioral Intervention for Young Children with Autism by
Sandra L. Harris and Mary Jane Weiss, ABA experts from Rutgers.
A guide to Applied Behavioral Analysis methods and how they can
be used to teach speech, language, social skills and self-help
skills through repetition and rewards. The book helps parents
evaluate school programs, home ABA and center-based ABA. |
Behavioral Intervention for Young Children With Autism: A Manual for
Parents and Professionals, edited by Catherine Maurice, Gina Green
and Stephen C. Luce. A how-to manual for families starting a home ABA
program. Includes teaching programs, a chapter on how to pay for ABA,
and samples of data collection sheets.
Triumphs in Early Autism Treatment , edited by Ennio
Cipani PhD, documents the cases of seven children who achieved
"best outcomes" (being indistinguishable from other kids) after
ABA. All ABA isn't equal, nor is ABA a guarantee of reaching
best outcomes, but this book helps a parent see what an
excellent ABA program should look like.
Books about Verbal
Behavior:
Educate Toward Recovery: Turning the Tables on Autism by Robert
Schramm,
a Board Certified Behavior Analyst. An
easy-to-read teaching manual for parents who are new to the
concepts and language of Verbal Behavior. He includes information on
children who don't respond to conventional ABA methods, and on
how VB can be used along with the Relationship Development
Intervention method.
Books about Pivotal Response Treatment:
Overcoming Autism: Finding the Answers, Strategies, and Hope That Can
Transform a Child's Life
by Lynn Kern Koegel Ph.D. (featured on The Supernanny) and
Claire LaZebnik. Koegel uses a form of applied behavior analysis called Pivotal Response Treatment (PRT). PRT targets certain pivotal skills, such as motivation, that affect development in
many other areas. Dr. Koegel says PRT is a more "child-friendly" form of
treatment. Her book includes chapters on teaching communication,
breaking the cycle of meltdowns, repetitive behaviors like flapping,
social skills, battling fears and fixations, school placement and family
life.
Useful links for parents and behavior analysts:
° The
Behavior Analysis Certification Board lists certified behavior
analysts by state and country.°
The Association for Behavior Analysis is a professional organization
for ABA and VB therapists and researchers.
° The
Surgeon General's Report supports the effectiveness of Applied
Behavioral Analysis for autism. Show this information to your school
district to help make a case for ABA.
° Read Verbal
Behavior
articles at
Mark Sundberg.com.
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