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"Adolescence is a new birth, for the higher and more completely human traits are now born. The qualities of body and soul that now emerge are far newer. The child comes from and harks back to a remoter past; the adolescent is neo-atavistic, and in him the later acquisitions of the race slowly become prepotent. Development is less gradual and more saltatory, suggestive of some ancient period of storm and stress when old moorings were broken and a higher level attained. The annual rate of growth in height, weight, and strength is increased and often doubled, and even more. Important functions previously non-existent arise. Growth of parts and organs loses its former proportions, some permanently and some for a season. Some of these are still growing in old age and others are soon arrested and atrophy. The old moduli of dimensions become obsolete and old harmonies are broken. The range of individual differences and average errors in all physical measurements and all psychic tests increases. This book discusses adolescent development"--Preface. (PsycINFO Database Record (c) 2014 APA, all rights reserved).

Adolescence.

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"Adolescence is frequently defined as the intermediate stage between childhood and adulthood. This definition, however, is not an entirely accurate one. It implies that childhood and adulthood are two sharply delineated periods of life, and that adolescence is a definite period that begins when childhood ends and is completed when adulthood is reached. In reality, the growth process does not occur in stages. Adulthood is the end result of gradual maturation that begins with the fusion of the ovum and sperm. Arbitrarily separating this process into periods gives the false impression that growth proceeds by "steps." Actually, the growth chart depicts a curve. In the opinion of the writer, adolescence encompasses an extensive period of accelerated physical and psychological growth. Its onset can be determined by observation of physical changes. As will be indicated in the chapter on physical development, this period of change usually begins at about the age of ten in girls and the age of twelve in boys. Clinical evidence shows that modifications of the psychological structure take place at approximately the same time as the physical change occurs. The onset of the psychological changes is not so easily determined as the physical, partially because the changes take place more gradually but also because no accurate measuring techniques exist at present for determining changes in psychological growth patterns. Adolescence terminates physically with the establishment of the mature body structure and the mature functioning of the glands of internal secretion, particularly those directly related to the reproductive system. It terminates psychologically with the establishment of relatively consistent patterns for dealing with the internal conflicts and the demands of reality experienced by the physically mature individual"--Introduction. (PsycINFO Database Record (c) 2014 APA, all rights reserved).

Adolescence.

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Adolescence

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Adolescence

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Adolescence