As already indicated, they constitute his
birthright as a human being, though most of them are present in the
early years of his life only in potentiality. Psychologists of recent
years have made extensive observations as to what instincts are most
prominent at given periods. Teachers are referred particularly to the
volumes of Kirkpatrick, Harrison, and Norsworthy and Whitley. In this
latter book, pages 286, 287, and 298-302, will be found an interesting
tabulation of characteristics at the age of five and at eleven. For the
years of adolescence Professor Beeley, in his course at the Brigham
Young Summer School, in the Psychology of Adolescence, worked out very
fully the characteristics unique in this period, though many of them, of
course, are present at other stages:
CHARACTERISTICS UNIQUE IN THE ADOLESCENT PERIOD
1. Maturing of the sex instincts.
2. Rapid limb growth.
3. Over-awkwardness.
4. Visceral organs develop rapidly (heart, liver, lungs, genital
organs.)
5. Change in physical proportions; features take on definite
characteristics.
6. Brain structure has matured.
7. Self-awareness.
8. Personal pride and desire for social approval.
9. Egotism.
10. Unstable, "hair-trigger," conflicting emotions.
11. Altruism, sincere interest in the well-being of others.
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