To incorporate repeated measures in a single-case design, it is important that the behavior is

Obesity is a common nutritional concern during adolescence. The availability of fast food is a major contributor to adolescent obesity because __________

a) adolescents are too lazy to eat nutritious foods b) it delivers large portions of high-calorie and high-fat food at low prices c) cooking at home is not as popular for adolescents as it used to be d) adolescents are not educated about the quality of foods

Longtime speculations that there is insufficient catecholamine activity in the brains of individuals with ADHD have been supported with the observation that adults diagnosed with ADHD have a higher density of _____________ transporters

a. serotonin b. GABA c. dopamine d. acetylcholine