Describe the possible causes of intellectual developmental disorder
What will be an ideal response?
Ans: Most types of intellectual developmental disorder can be traced to biological causes (see Mefford, Batshaw, & Hoffman, 2012, for an overview). However, the variation is huge. Examining genetic, chromosomal, and metabolic abnormalities has led researchers to identify more than 1,000 forms of impairment (Dykens & Hodapp, 2001). It has been suggested that mild disorders are more related to environmental influences. More severe forms are more related to biological factors (see Shapiro & Batshaw, 2011, for an overview). One way to organize these disorders is in terms of those directly related to chromosomes, those related to metabolism, and those related to events that take place in the womb, such as malnutrition or the mother taking drugs, such as alcohol or crack.
Learning Objective: 5.7 Describe the characteristics of intellectual development disorder, its causes, and treatment.
Cognitive Domain: Analysis
Answer Location: Causes of Intellectual Developmental Disorders
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