The two main types of operant reinforcers are referred to as

Freud believed that puberty awakens the __________ that has lain dormant during the latency

stage. Fill in the blanks with correct word

Which of the following statements about the etiology of ADHD is false?

a. Children with ADHD form a fairly homogeneous group and their difficulties can be traced to an underlying neurological abnormality. b. Both biological and psychosocial factors play important roles in the development of ADHD. c. In a majority of clinical cases diagnosed today, the etiology of the child's difficulties is unknown. d. Considerable evidence shows that ADHD has a genetic component. e. Children who may be biologically vulnerable or at-risk to develop the disorder are more likely to do so when raised in an environment where they are regularly exposed to significant sources of stress.