Problem

Solutions For Abnormal Psychology Chapter 12 Problem 2TY

Step-by-Step Solution

Solution 1

Intellectual disability as the name indicates it is the inability of a child to learn new things as fast as the normal children. In this experiences difficulty in the daily functioning and will be also dull in the studies. The child of age 10 years with the intellectual disability behave as 3 or 4 year child.

Step #2 of 8

Intellectual disability may be due to autism, Down syndrome and cerebral palsy.

Step #3 of 8

Phenylketonuria (PKU) is a metabolic disease due to the recessive gene inherited from both the parents. It is characterized by the bodies’ inability to convert the phenylalanine into paratyrosine. So this caused by the absence of an essential enzyme.

Step #4 of 8

Hence the option b is not correct.

Step #5 of 8

Fragile X syndrome occurs when a DNA series makes too many copies of itself and turns off a gene in the X chromosome.

Step #6 of 8

Hence the option d is not correct.

Step #7 of 8

Down’s syndrome is another intellectual disorder that is characterized by different facial appearance and experience cognitive delay. This is due to the abnormality of a trisomy in the 21^st pair of the chromosome.

Step #8 of 8

Hence the correct option is .