Scaffolding refers to the gap between what adolescents can accomplish alone and what they are capable of doing if guided by an adult or a more competent peer

A(n) _____ stimulus is one that signals the presence of reinforcement

A) primary B) discriminative C) secondary D) generalized

A personality disorder characterized by marked instability in self-image, mood, and interpersonal relationships is ________ personality disorder

a. borderline b. antisocial c. histrionic d. narcissistic