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Attention-Deficit/ Hyperactivity Disorder (page 2)

By M.A. Mastropieri|T.E. Scruggs
Pearson Allyn Bacon Prentice Hall

Causes of ADHD

Precise causes of ADHD are unknown; however, it is thought that many factors contribute to it (Riccio, Hynd, & Cohen, 1997). These factors include genetic, nongenetic, psychosocial, and neurobiological bases. Genetic evidence is based on research with families who have ADHD. Some researchers estimate that as many as 32% of children with ADHD have parents or siblings with ADHD (Biederman et al., 1992), and concordance of ADHD has been seen to be much higher in identical (monozygotic) twins than in fraternal (dizygotic) twins, suggesting a genetic component (Barkley, 1998). Nongenetic factors include prenatal and perinatal factors, allergies, and thyroid disorders (Riccio, Hynd, & Cohen, 1997). Although both food additives (Feingold, 1975) and sugar (Smith, 1975) have been proposed as causes of ADHD, research has not substantiated these as plausible causes of ADHD (Barkley, 2000; Wolraich, Milich, Stumbo, & Schultz, 1985). Other research has investigated the psychosocial and neurological correlates associated with ADHD, with evidence growing in support of neurological indicators (Riccio, Hynd, & Cohen, 1997). To date, however, as with many disorders, no definitive single etiological factor has been uncovered. At present, it seems that ADHD appears to be more influenced by neurological and genetic factors than by social or environmental factors (Barkley, 1998).

Issues in Identification and Assessment of ADHD

Many experts recommend a two-step approach to the assessment of ADHD. The first step is to determine whether ADHD exists, and the second step is to determine whether the student’s educational progress is adversely affected by it (CEC, 1992). During the first step, information is collected on observations of the individual’s behavior throughout the day, medical history, family information, school information, social-emotional functioning, and cognitive-academic functioning (CEC, 1992; Schwanz & Kamphaus, 1997). Rating scales of the individual’s behavior are usually completed by the child’s parents and teachers as part of this evaluation process.

To qualify for special education services in the “other health impairment” category of IDEA, it must be documented that the ADHD has an adverse effect on educational performance. To qualify for special services under Section 504 of the Vocational Rehabilitation Act, it must be documented that the ADHD substantially limits learning. If either of these requirements is met, an intervention plan is designed and implemented as either part of the IEP in compliance with IDEA or the accommodation plan for compliance with Section 504. In the event that students with ADHD do not meet criteria for either IDEA or Section 504, no special accommodations are designed as part of any legally mandated system. However, these students with ADHD also frequently benefit from some of the general classroom adaptations described in this article and listed below. 

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