Practice Quiz

EPPP Psychology

Category - Assessment and Diagnosis

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In cases where the etiology of a neurodevelopmental disorder is known, the most common cause is:
  1. Chromosomal changes or exposure to toxins during the prenatal period
  2. Heredity
  3. Pregnancy and perinatal problems
  4. Medical conditions during infancy and childhood
Explanation
Answer: A - Chromosomal changes or exposure to toxins during the prenatal period is the most common cause.
Approximately 30% of people with neurodevelopmental disorders with known etiology have chromosomal changes such as Down syndrome or exposure to toxins during the prenatal period such as fetal alcohol spectrum disorder.
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