A period of rapid physical maturation involving hormonal and bodily changes that take place primarily in early adolescence.
Powerful chemical secreted by the endocrine glands and carried through the body by the bloodstream.
The main class of male sex hormones.
The main class of female sex hormones.
Puberty phase involving hormonal changes in the adrenal glands, located just above the kidneys.
These changes occur from about 6 to 9 years of age in girls and about one year later in boys, before what is generally considered the beginning of puberty.
Puberty phase involving the maturation of primary sexual characteristics (ovaries in females, testes in males) and secondary sexual characteristics (pubic hair, breast, and genital development). This period follows adrenarche by about two years and is what most people think of as puberty.
A girl’s first menstrual period.
A boy’s first ejaculation of semen.
Patterns of onset of puberty over historical time, especially across generations.
female athlete triad
A combination of disordered eating, amenorrhea, and osteoporosis that may develop in female adolescents and college students.
A modification of behavior that promotes an organism’s survival in the natural habitat.
An approach that emphasizes the importance of adaptation, reproduction, and survival of the fittest in explaining behavior.
Threadlike structures that contain deoxyribonucleic acid (DNA)
A complex molecule that contains genetic information.
The units of hereditary information, which are short segments composed of DNA.
A person’s genetic heritage; the actual genetic material.
The way an individual’s genotype is expressed in observed and measurable characteristics.
The field that seeks to discover the influence of heredity and environment on individual differences in human traits and development.
A study in which the behavioral similarity of identical twins is compared with the behavioral similarity of fraternal twins.
A study in which investigators seek to discover whether the behavioral and psychological characteristics of adopted children are more like their adoptive parents, who have provided a home environment, or more like those of their biological parents, who have contributed their heredity.
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