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| Dear Reader,
Welcome to another issue of our ACT
Newsletter! In this issue we share with you
the key ingredients to using a conditioned
reinforcement system effectively. We
also discuss the use of Applied Behavior Analysis
to treat older children on the Autism
Spectrum. Sometimes people question whether
ABA is effective for older children. We
address this question with a resounding, "Yes!"
and provide some research findings on this
topic. Lastly, we will share Eric's story
with you.
Please enjoy this issue of the ACT
Newsletter! | |
| How to Use a Conditioned
Reinforcement System: Another Tool for Your Behavior
Toolbox
One of the
most effective and efficient ways of providing
reinforcement is with a conditioned reinforcement
system (CRS). A CRS is any system by which a
person is reinforced when they receive a
conditioned reinforcer (e.g., a token, star or
sticker). The conditioned reinforcer is a neutral
object that would not usually be
reinforcing. It is paired numerous times with
a very reinforcing stimulus (e.g., a preferred toy
or candy). Because the neutral object and the
reinforcing object are paired repeatedly, the
previously neutral object now represents the
reinforcing stimulus (e.g., the sticker now
represents the preferred toy). The neutral
object has become a conditioned reinforcer.
Though there are many different
kinds of CRSs, one of the most commonly used
is a star chart or sticker chart. In this
case, the stars and/or stickers are the
conditioned reinforcers and they represent an
actual reinforcer that the child will receive at a
later time. A star chart can be used in many
ways. A common way of using a star chart is
having the child earn a specified number of stars
before he earns a reinforcer. For example,
the child might have to earn ten stars in order to
receive dessert that night. The child must
earn all of his stars to receive the
reinforcer. When you begin using a
star or sticker chart, you will have to condition
the stars to the reinforcer that the child is
earning. One way to do this is to start by
having all of the stars on the chart except the
last star. When your child engages in the
behavior you wish to reinforce, you can have her
put on the last star and immediately give her the
specified reinforcer. Starting this way
teaches your child two things: 1) the star
represents the reinforcer that she wants, and 2)
she gets the reinforcer when the star chart is
completed. When your child is accustomed to
earning one star to complete the chart, you should
set up the star chart with all except the last two
stars. When she has earned the last two
stars, she should receive her reinforcer. In
this same fashion, continue to reduce the number
of stars that you start with until the child is
starting with no stars and earning all of them
before being reinforced. The number
of stars on a star chart will vary depending on a
number of factors including the difficulty of the
behavior, the length of the behavior you are
reinforcing, the child's ability to wait, and the
reinforcing value of the reinforcer itself.
If the behavior you are rewarding is a relatively
easy one for the child, you might require that the
child earn more stars in order to earn his
reinforcer. Similarly, if the behavior is a
very short and discrete behavior, you might
consider having the child earn a greater number of
stars before he receives his reinforcer. If
the behavior you are reinforcing is particularly
difficult or lengthy, you might consider
having your child earn fewer stars to get his
reinforcer. Lastly, the type of reinforcer
you use can influence how many stars you
require. Small reinforcers (e.g., M&Ms
and chips) or short and discrete reinforcers
(e.g., sensory input or singing a song) can be
given more frequently because they are easily
delivered. However, lengthy reinforcers (e.g.,
watching a favorite video or playing in the pool)
are not as easily delivered; you may want to
require more stars for these activities.
Keep in mind that reinforcers which
are very strong (i.e., a reinforcer that is very
reinforcing for the child) should not be used too
often. Your child may satiate (i.e., get
used to) this reinforcer and it will not be as
valuable to the child. Conversely, if you
have a slightly less preferred reinforcer, you can
increase the strength of the reinforcer by
limiting your child's access to it. This is called
"establishing operations." As you can
see, star charts require a bit of preparation and
conditioning; however, once you've conditioned the
stars, using a star chart can be more effective
than simply giving your child her reinforcer
immediately. Most importantly, by using
stars instead of the actual reinforcer, you are
guarding against satiation. Secondly, your
child is learning to wait for her actual
reinforcer. Lastly, a star chart is useful
because it is portable, generalizes well to
other people, and can be easier than delivering
lengthy reinforcers after every target
behavior. Here are a few tips to make
your star chart especially
successful: 1) Give
a star immediately after the behavior you want
to
reinforce. 2) Deliver
the unconditioned reinforcer immediately
after
your child has completed her star chart.
If the reinforcer
can't
be delivered within a timely manner, don't
use that
reinforcer. 3) Decorate the
star chart with your child's favorite character
or
subject. She will be maximally motivated to
use it. 4) Let your child put
on the stars. This will likely be more
reinforcing
than watching you put them on for
her. It is often asked if the stars
on a star chart can be removed as punishment for
undesirable behavior. In general, it is not
advisable to remove stars. This is
especially true if the child engages in frequent
undesirable behaviors throughout the day.
When a star is removed consistently, your child
may learn that he will lose the stars faster than
he earns them. This will make the stars less
valuable to your child and he may not be motivated
to earn them.
Lastly, there are some small variations that
can be made to the traditional star chart.
One might attach a value to each star. For
example, each star may be worth one piece of
candy. If your child earns one star, he
receives one piece of candy; however, if he earns
five stars, he earns five pieces of candy.
This way, the level of reinforcement is comparable
with the level of effort. You can also
attach different reinforcers to different amounts
of stars. If, for example, your child
completes his star chart, he would get a very
preferred reinforcer (e.g., a trip to the pool).
If he earns all but one of his stars, he would get
a slightly less preferred reinforcer (e.g., a trip
to the park). In conclusion,
with a little bit of effort, conditioned
reinforcement systems can be a very effective and
useful addition to you behavior toolbox.
Good
luck!
|
Research Demonstrates
that Behavior Therapy is Effective for Older
Children with
Autism
Much attention has been given to the
importance and efficacy of intensive behavior
intervention for very young children with Autism;
however, a recent Meeting Point Article from the
Lovaas Institute website, "Data-Based Research in
Applied Behavior Analysis for Older Children with
Autism," (June, 2007) points out that
research has also demonstrated that behavior
therapy has a significant impact on the lives of
older children with Autism Spectrum
Disorders. Behavior therapy is
used primarily to improve the quality of an
individual's life. Research has shown that
this can be accomplished for people of all ages
through Applied Behavior Analysis (ABA). In
fact, the Lovaas article points out the there are
over 70 published research articles which document
the use of Applied Behavior Analysis to teach new
skills to people with Autism over the age of
five. Below is a short review of some of
this research. Koegel, Firestone,
Kramme & Dunlap (1974) looked at the
spontaneous play of two children with Autism (ages
8 and 6) with high occurrences of self-stimulatory
behaviors. During the first baseline phase
of the study, the researchers observed and
recorded the children's levels of spontaneous play
and self-stimulatory behaviors. During the
treatment phase, the researchers implemented
behavior therapy to suppress the self-stimulatory
behaviors across weeks and recorded the levels of
spontaneous play that the children
exhibited. During the last phase, the
researchers discontinued the suppression of the
self-stimulatory behaviors and recorded the levels
of spontaneous play for a third time. This
study demonstrated that when self-stimulatory
behaviors were suppressed in these two children,
their levels of spontaneous play increased
significantly. In another study Gena,
Krantz, Mclannahan & Poulson (1996) examined
whether contextually appropriate affective
behavior could be taught to four children with
Autism (ages 11.3 - 18.9 years). They also
investigated whether these behaviors would
generalize to new responses, across new settings
and to new therapists at a one-month follow
up. The treatment consisted of modeling,
prompting and reinforcing the appropriate
affective responses. The study indicated
that appropriate affective responses
systematically increased throughout the treatment
phase for all four children. Also, it was
found that the children were exhibiting the new
appropriate responses with untrained scenarios,
with new therapists, in new settings and at new
times, suggesting that generalization
occurred. Lastly, a study conducted
by Gaylord-Ross, Haring, Breen & Pitts-Conway
(1984) looked to increase the initiations and
duration of social interactions between
adolescents with Autism and their typically
developing peers. The subjects of this
experiment were two adolescent males with IQ's
ranging from 30-55. Using Applied Behavior
Analysis, the boys were successfully taught how to
use common leisure items (radio, video games and
gum) to initiate elaborate social interactions
with neuro-typical peers. The boys then
generalized the skills to new peers in the same
setting. All three of these studies,
and there are many more like them, show that
Applied Behavior Analysis is very effective for
helping improve the quality of life for older
children with
Autism.
|
Eric's
Story
ACT would like to introduce our readers to
Eric! Eric is a bright, inquisitive and
energetic 12 year old who has a glint of mischief
in his blue eyes and a smile that will brighten
anyone's day. Eric loves bugs and especially
bees. He swims, listens to all types of
music, and enjoys exercising on the treadmill and
stair climber. Eric began
behavior therapy with ACT when he was 8 years
old. Before then, Eric was a frustrated
child, his mother, Millie, says. It was
difficult for him to communicate his feelings and
needs. Eric didn't communicate
appropriately. To express his frustration
and anger he would knock over desks, pull people's
hair and throw things. At home, Eric had a
strained relationship with his older sister,
Jessi. It was difficult for them to play
together nicely because of Eric's aggressive
behaviors. At school, Eric was
bored. Millie recalls that he was not
challenged to do his work. No one knew what
academic concepts were mastered because Eric
wasn't motivated and did not have a response
format for showing what he had learned. He was
aggressive, so he had trouble with peer
relationships and class participation. He
also had difficulty sitting in his chair
appropriately and following class rules.
Shortly before starting with ACT, Eric's parents
had acquired a "talker" for him. This
augmentative communication device, also called a
Voice Output Device (VOD), looked like a small
computer with a touch screen. Millie and
Mark, Eric's father, worked to program endless
pages of buttons into the talker. Eric could
touch a button and a word would be spoken aloud
for him by the computer. Unfortunately, no
one at school used this talker with
Eric. Millie noted that ACT
therapists were the first to take the time to
learn how Eric's talker worked. They learned
how to program new pages and buttons and actively
used his talker in therapy sessions and at
school. Now, four years later, Eric's
ability to communicate has increased
significantly. He uses his talker to
communicate his needs, express his feelings, tell
jokes and ask questions. ACT therapists also began
working on Eric's inappropriate behaviors in his
classroom. Currently, he is able to sit in a
chair appropriately and do his schoolwork.
He is able to play games with friends and be
included with regular education peers in their
classroom. Eric makes choices and circles to
indicate correct answers. He is learning to
use a calculator, sight read, and tell time.
He is consistently learning new
things. At home, there have been many
significant changes since starting behavior
therapy. Millie says that their home is now
much calmer and more relaxed. Now Eric can
play alone, brush his teeth, make basic snacks,
and more. Eric's parents express that they
feel more empowered than they did four years
ago. Millie says that she has learned tools
from ACT to deal effectively with Eric's
behaviors. She feels confident when the family
goes on outings that she can structure the outing
so that Eric will be successful. If Eric is
having a tough day, Millie feels sure that she can
handle it effectively. One major
improvement that Millie sees is the relationship
between Eric and Jessi. Now, she says, they
really enjoy their time together. They watch
tv, swing outside and play computer games
together. Eric affectionately calls her
"Deedee". For Millie, this was a very
significant change. To see them playing together
and really enjoying each other fills her with joy.
"Watching them play," Millie declares, "that says
it
all!"
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We hope that you have enjoyed
this issue of ACT's Newsletter and found it
useful! Please contact us if there are
topics you would like to see addressed in the
newsletter in the future. You may suggest
topics by sending an email to:
Look for our next issue in
October, 2008!
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