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Attention Deficit Hyperactivity Disorder A Window into Disability as Variability -- Harvard University A Window into Disability as Variability -- Harvard University
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ADHD in the Classroom / My daily “emotional rollercoaster” with Sean / We both had the same goal: academic success for Sean, but we couldn’t reach it… / My daily “emotional rollercoaster” with Sean / We both had the same goal: academic success for Sean, but we couldn’t reach it…
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ADHD in the Classroom / Sean was a very tactile child / Velcro under the desk helped him focus, but why?
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My Research Questions / Why did the Velcro trick work? / What is ADHD? / What are the major theories surrounding ADHD? / What is the neuroscience behind ADHD? / How will this information help me avoid the “emotional rollercoaster” in my classroom? / Why did the Velcro trick work? / What is ADHD? / What are the major theories surrounding ADHD? / What is the neuroscience behind ADHD? / How will this information help me avoid the “emotional rollercoaster” in my classroom?
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What is ADHD? / 3-7% of children in the US are diagnosed / DSM-IV diagnostic tool / Inattention / Impulsivity / Hyperactivity / Variability!!! / For our purposes, we will think about children like Sean… / 3-7% of children in the US are diagnosed / DSM-IV diagnostic tool / Inattention / Impulsivity / Hyperactivity / Variability!!! / For our purposes, we will think about children like Sean…
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What do we traditionally think of when we think of a good student? “Good”“Bad” Sits stillDistracted
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Key Points in the Presentation / ADHD Theory / Barkley’s Behavior Inhibition Theory (1997) / Neuroscience and ADHD: structure/function differences that have been studied in children with ADHD / Sikstrom and Soderlund’s Moderate Brain Arousal Theory / Why the Velcro trick worked! / ADHD Theory / Barkley’s Behavior Inhibition Theory (1997) / Neuroscience and ADHD: structure/function differences that have been studied in children with ADHD / Sikstrom and Soderlund’s Moderate Brain Arousal Theory / Why the Velcro trick worked!
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Key Points in the Presentation / What does this mean for the classroom? / Examples of interventions that do not work for most kids / Examples of interventions that might work when considering MBA theory / Discussion on changing our ideas of what a good student is to account for variability / What does this mean for the classroom? / Examples of interventions that do not work for most kids / Examples of interventions that might work when considering MBA theory / Discussion on changing our ideas of what a good student is to account for variability
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Barkley’s Behavior Inhibition Theory (1997) / Behavior inhibition deficits cause executive function deficits. / Children with ADHD will have deficits in the following executive functions: working memory, self- regulation, and motor control. / What do all of these terms mean? / Behavior inhibition deficits cause executive function deficits. / Children with ADHD will have deficits in the following executive functions: working memory, self- regulation, and motor control. / What do all of these terms mean?
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Barkley’s Theory / Behavior inhibition is the ability to stop an initial or ongoing response and the ability to redirect yourself to a goal- oriented behavior / Sean during independent reading as an example / Behavior inhibition is the ability to stop an initial or ongoing response and the ability to redirect yourself to a goal- oriented behavior / Sean during independent reading as an example
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Barkley’s Theory / Executive Functions / Self-regulation / Sequencing behaviors / Planning and organization / Working memory / Internal speech / Defined differently even by leaders in the field / Executive Functions / Self-regulation / Sequencing behaviors / Planning and organization / Working memory / Internal speech / Defined differently even by leaders in the field
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Executive Functions / Self-regulation / The ability to regulate your affect, motivation, or arousal in service of a goal directed action (Barkley 1997). / An inability to self-regulate will also cause a deficit in the ability to self-direct motor functioning / Sean was unable to self-regulate motivation during independent reading / Self-regulation / The ability to regulate your affect, motivation, or arousal in service of a goal directed action (Barkley 1997). / An inability to self-regulate will also cause a deficit in the ability to self-direct motor functioning / Sean was unable to self-regulate motivation during independent reading
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Executive Functions / Working Memory / The ability to store and manipulate information in your mind / Sean often couldn’t hold the academic goal in his WM / Working Memory / The ability to store and manipulate information in your mind / Sean often couldn’t hold the academic goal in his WM
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Executive Functions / Working Memory Task / Count the number of times the team in white passes the basketball / Basketball Video Basketball Video / Working Memory Task / Count the number of times the team in white passes the basketball / Basketball Video Basketball Video
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Gaps in Barkley’s Theory / Barkley’s theory puts the onus of change on the child / Barkley leaves out neuroscience / His theory tells us a lot about behaviors, but it does not tell us why they occur. / Barkley’s theory puts the onus of change on the child / Barkley leaves out neuroscience / His theory tells us a lot about behaviors, but it does not tell us why they occur.
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Brain 101 / Neurons - receive and transmit info / Neurotransmitters / Chemicals that help neurons “talk” / Example: Dopamine / Cerebral Cortex / 4 lobes / Occipital, Parietal, Temporal, Frontal / Prefrontal Cortex / Houses EF’s / Neurons - receive and transmit info / Neurotransmitters / Chemicals that help neurons “talk” / Example: Dopamine / Cerebral Cortex / 4 lobes / Occipital, Parietal, Temporal, Frontal / Prefrontal Cortex / Houses EF’s
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Structural Differences / Tannock (1998) reviewed structural imaging studies. / Children with ADHD show differences in: / prefrontal cortex / basal ganglia / corpus callosum
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Functional Differences / Tannock (1998) reported that ERP studies show children with ADHD perform poorly in sustained and selective attention tasks compared to controls
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Individual Variability and Careful Interpretation / Important to remember that all individuals have structural and functional differences / We must interpret findings with care / Important to remember that all individuals have structural and functional differences / We must interpret findings with care
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Why? / We still want to know why children with ADHD exhibit the behaviors they do / Moderate Brain Arousal will help us understand behaviors so we don’t confuse them with the child’s intentions. / We still want to know why children with ADHD exhibit the behaviors they do / Moderate Brain Arousal will help us understand behaviors so we don’t confuse them with the child’s intentions.
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Sikstrom and Soderlund (2007) Moderate Brain Arousal Theory / Children with ADHD have a dysfunctional dopamine system / What is dopamine? / Children with ADHD have a dysfunctional dopamine system / What is dopamine? Dopamine Video
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Dopamine Levels ADHD v. “Normal” A. Tonic (ever present) dopamine is lower in children with ADHD B. Their phasic response (response to stimuli) is higher Sikstrom & Soderlund(2007)
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Sikstrom and Soderlund (2007) Moderate Brain Arousal Theory / Low dopamine levels cause a higher dopamine release in response to external stimuli / This large boost in dopamine levels causes hypersensitivity to the environment / Secondary effects / The body becomes conditioned to seek out external stimuli because it’s highly rewarding / Low dopamine levels cause a higher dopamine release in response to external stimuli / This large boost in dopamine levels causes hypersensitivity to the environment / Secondary effects / The body becomes conditioned to seek out external stimuli because it’s highly rewarding
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MBA Theory: Stochastic Resonance / “Noise” imported through the perceptual system can compensate for low levels of dopamine / Too much or too little noise can be detrimental! / “Noise” imported through the perceptual system can compensate for low levels of dopamine / Too much or too little noise can be detrimental!
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External Stimuli / The Velcro and the gorilla are instances of children with ADHD seeking out external, novel stimuli to bring themselves to a normal arousal level
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Listen to the Noise / Sikstrom, Soderlund, and Smart (2007) / Kids with ADHD performed better on a memory recall task with white noise / White noise was detrimental for controls doing the same task Soderlund, Sikstrom, & Smart (2007)
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More Noise! / MBA can explain a 1996 study of auditory stimulation and arithmetic performance / Kids with ADHD did better listening to their favorite music! / Speech had no effect / MBA can explain a 1996 study of auditory stimulation and arithmetic performance / Kids with ADHD did better listening to their favorite music! / Speech had no effect
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What strategies do not work? / Keeping MBA theory in mind… / Minimizing distractions? / Behavior contracts? / Keeping MBA theory in mind… / Minimizing distractions? / Behavior contracts?
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What does work? / Appealing stimuli / Color differentiation / Salient visuals / Novel ways of starting lessons…any ideas? / Appealing stimuli / Color differentiation / Salient visuals / Novel ways of starting lessons…any ideas?
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Counterintuitive Strategies / Strategic seating chart for lessons and independent work / Sitting Sean at the front of the rug never worked! / Music (as “white noise”) / “Blurting out answers” - stop to think about the context of the “blurting out” / Strategic seating chart for lessons and independent work / Sitting Sean at the front of the rug never worked! / Music (as “white noise”) / “Blurting out answers” - stop to think about the context of the “blurting out”
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Classroom Reality / Make goals available in the environment / Break down independent work into clear steps / Teach strategies for self-help / Sketching out steps / Asking questions / Make goals available in the environment / Break down independent work into clear steps / Teach strategies for self-help / Sketching out steps / Asking questions
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Variability / As teachers we are keen observers. / Notice what modality your student might be most attracted to. Sean liked tactile things / Notice their energy level and help them find strategies that work to keep them at a moderate arousal level / Make lessons the most “salient” thing in the environment! Notice what works. / As teachers we are keen observers. / Notice what modality your student might be most attracted to. Sean liked tactile things / Notice their energy level and help them find strategies that work to keep them at a moderate arousal level / Make lessons the most “salient” thing in the environment! Notice what works.
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What is a good student? / How does MBA theory change our concept of “good” students? / Is ADHD a deficit or an example of variablity? / What role does the environment play? / How does MBA theory change our concept of “good” students? / Is ADHD a deficit or an example of variablity? / What role does the environment play?
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