People with severe intellectual developmental disorder outnumber those with mild intellectual developmental disorder

The complex, abstract concepts that we cannot observe directly but that we study in psychology are

a. manipulations. b. variables. c. main effects. d. constructs.

What is the term for someone who has a compulsion to repeat whatever someone else has just said?

a) dysphasia b) toddler c) neophobia d) Repetitive Dysfunction Disorder (RDD) e) echolalia