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The stage is initiated at puberty, [8] but may not be completed until well into the adult years. [9] Otto Fenichel considered genital primacy was the precondition for overcoming ambivalence and for whole-object love. [10] In 1960, Robert W. White extended Freud's genital stage to not only include instinctual needs but effectance. His stage ...
The increased secretion of testosterone from the testes during puberty causes the male secondary sexual characteristics to be manifested. [23] Testosterone directly increases size and mass of muscles, vocal cords, and bones, deepening of the voice, and changing the shape of the face and skeleton. [1]
First published in 1994, It's Perfectly Normal has constantly been updated for the three anniversary editions in 2004, 2009, and 2014. [2] According to Dell'Antonia of The New York Times, Harris, with the purpose of teaching young individuals accurate and resourceful information about sex, had consistently included details of sexual intercourse and the events leading to pregnancy as well as ...
[9] [10] [11] Puberty that starts earlier than usual is known as precocious puberty, and puberty which starts later than usual is known as delayed puberty. Notable among the morphologic changes in size, shape, composition, and functioning of the pubertal body, is the development of secondary sex characteristics, the "filling in" of the child's ...
Puberty is a period of several years in which rapid physical growth and psychological changes occur, culminating in sexual maturity. The average age of onset of puberty is 10–11 for girls and 11–12 for boys.
Between 2 and 3 years of age, the child is able to refer to themself as "me", combine nouns and verbs, use short sentences, use some simple plurals, answer "where" questions, and has a vocabulary of about 450 words. [131] By age 4, children are able to use sentences of 4–5 words and have a vocabulary of about 1000 words. [131]
In its broadest sense, and often simplified as early puberty, "precocious puberty" sometimes refers to any physical sex hormone effect, due to any cause, occurring earlier than the usual age, especially when it is being considered as a medical problem.
James Mourilyan Tanner (1 August 1920 – 11 August 2010) was a British paediatric endocrinologist who was best known for his development of the Tanner scale, which measures the stages of sexual development during puberty. He was a professor emeritus of the Institute of Child Health at the University of London. [1] [2] [3]