Abandonment - The practice of abandoning offspring outside of legal adoption. Causes include many social and cultural factors as well as mental illness.
Adultcentrism - The exaggerated egocentrism of adults.
Adultism - A predisposition towards adults, which some see as biased against children, youth, and all young people who aren't addressed or viewed as adults.
ADHD - A persistent pattern of inattention and/or hyperactivity, as well as forgetfulness, poor impulse control or impulsivity, and distractibility.
Age of consent - The minimum age at which a person is considered to be capable of legally giving informed consent to any contract or behaviour regulated by law with another person.
Age of criminal responsibility - The age after which the defense of infancy is no longer an excuse.
Age of majority - The threshold of adulthood as it is conceptualized in law.
Anorexia nervosa - A psychiatric diagnosis that describes an eating disorder characterized by low body weight and body image distortion with an obsessive fear of gaining weight.
