A pervasive developmental disorder that involves the loss of previously acquired skills and abnormal functioning following a period of normal development during the first two years of
Life is ______.
A) Rett's disorder
B) Asperger's disorder
C) childhood disintegrative disorder
D) autism

Question

Quizplus · Accepted Answer

Childhood disintegrative disorder (CDD) involves the loss of previously acquired skills and abnormal functioning following a period of normal development during the first two years of life. Rett's disorder primarily affects girls and involves a loss of skills as well, but it occurs after a period of normal development for the first 5-6 months of life. Asperger's disorder is a high-functioning form of autism that does not typically involve a loss of skills. Autism is a pervasive developmental disorder, but it does not necessarily involve a loss of skills.

A Pervasive Developmental Disorder That Involves the Loss of Previously