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Intellectual Disabilities

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Intellectual disability is becoming more common in today’s society. According to the literature, Down syndrome (DS) is the leading cause, with an incidence rate of 1 in every 700 live births. 5,500 newborns are affected each year in the United States (Abbeduto, Warren, & Conners, 2007; Roberts, Price, & Malkin, 2007). The most common etiology of DS is Trisomy 21, which accounts for 98% of cases. Trisomy 21 is where the individual is born with an extra copy of chromosome 21 (Roberts, Price, & Malkin, 2007, p.26). Another cause of DS is known as Translocation. Translocation occurs when part of chromosome 21 attaches to another chromosome. The least common cause is Mosaicism, which is the result of a “nondisjunction of chromosome 21 that places an extra copy of the chromosome in some, but not all, cells” (Roberts, Price, & Malkin, 2007, p.26). Therefore, “DS is associated in multiple organ systems and a characteristic phenotype that includes physical as well as …show more content…

Gestures are actions produced with the intent to communicate and are typically expressed using one’s fingers, hands, and arms, facial features, and body motions. There are two primary categories for gestures: deictic and representational. Iverson, Longobaridi, and Caselli (2009) declared, “deictic gestures indicate referents in the immediate environment, and their meaning is thus context bound.” Deictic gestures are often divided into contact and distal gestures. Contact gestures were defined by Crais, Watson, & Baranek (2009) as gestures that, “require contact between a child and object or caregiver, such as giving a toy or pushing away an adult’s hand (p.96).” These are considered early gestures. Distal gestures, in contrast, “require no contact with the caregiver or object, such as pointing, showing, and reaching” (Crais, Watson, & Baranek, 2009, p.96). These are typically seen at approximately 10-12 months of

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