PSYC 241 Lecture Notes - Lecture 9: Intellectual Disability, Developmental Disorder, Chromosome Abnormality

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 241
• Professor: Shannon Zaitsoff

Document Summary

P s yc 241 we e k 9 (lec ture) Ne ur o de ve lo p mental dis o r de r s (replac es developmental dis orders ) Take home mes s ag e for developmental dis orders : early diagnosis and intervention are related to a better outcome! Inte lle c tual dis ab ility (replac es mental r etardation) Down s yndrome: one of the leading causes of intellectual disabilities. In down syndrome there is an extra chromosome on pair 21: normal human cell has 23 pairs of chromosomes, risk of down syndrome increases with maternal and paternal age, https://www. youtube. com/watch? v=twuyboovcyq. Inability to process or metabolize the amino acid phenylalanine. Intellectual disability (id) occurs when this substance builds up in the brain to toxic levels. Id prevented in these children if they follow a very low protein diet: detected with a blood test.