01:830:340 Lecture Notes - Lecture 15: Phenylalanine Hydroxylase, Intellectual Disability, Hemolytic Disease Of The Newborn
11 Jan 2020
School
Department
Course
Professor
Document Summary
Person is given a series of matrices and must complete each by selecting the correct symbol for the available choices. Deficits in adaptive skills are less stable than iq. Iq tests helped improve the classification of intellectual disabilities. Iq cutoff score changed to 1 in 1959 then back to 2 in 1973. 2. 3% of the population should have iqs of 70 or below. In reality more than 2. 3% of people have iq scores below 70. Very low iq scores are as a result of various biological conditions that produce intellectual disabilities. Most common cause of chromosomal disorder is down syndrome. Children with down syndrome have 47 chromosomes rather than 46. Most common genetic cause is pku - absence of phenylalanine hydroxylase. Cases of intellectual disabilities of unknown etiology often referred to as cultural familial intellectual disability are generally assumed to be variations in the normal distributions iq. 75% of intelligence is attributable to genetics.
