(See related pages)
Below are the key terms featured in this chapter. The textbook's full glossary is also available for online searching.
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| Adolescent egocentrism | The heightened self-consciousness of adolescents |
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| Anorexia nervosa | Eating disorder involving relentless pursuit of thinness through starvation |
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| Bulimia nervosa | An eating disorder in which the individual consistently follows a binge-and-purge pattern |
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| Depression | Experiencing symptoms of fatigue, irritability, lack of interest in daily activities, and suicidal thoughts over a prolonged period |
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| Dopamine | One of the key brain chemicals that carry and influence messages between nerve cells |
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| Ethologists | Scientists who research the connections between animal and human behaviours |
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| Gonads | The sex glands; testes in males and ovaries in females |
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| Hidden curriculum | Concept that every school has a pervasive moral atmosphere |
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| Hormones | Powerful chemical substances secreted by the endocrine glands and carried through the body by the bloodstream |
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| Hypothalamus | A structure in the higher portion of the brain that monitors eating, drinking, and sex |
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| Hypothetical-deductive reasoning | Piaget’s formal operations concept that adolescents have the ability to develop hypotheses about ways to solve problems |
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| Imaginary audience | Adolescents’ belief that others are as interested in them as they themselves are |
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| Menarche | First menstruation |
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| Personal fable | Part of adolescent egocentrism; an adolescent's sense of uniqueness and invulnerability |
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| Pituitary gland | An important endocrine gland that controls growth and regulates other glands |
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| Puberty | A period of rapid skeletal and sexual maturation that occurs mainly in early adolescence |
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| Sexually transmitted infections (STIs) and diseases (STDs) | Diseases that are contracted primarily through sexual contact |