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Stage one of infancy; birth to one month old
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1 day old
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Stage two of infancy; one month to one year old
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6 months old
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Stage one of childhood; one to six years old
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About 3 years old
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Stage two of childhood; six to eight years old
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About 8 years old
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Stage three of childhood; nine to twelve years old
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About 11 years old
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Stage one of youth
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13 years old
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Stage two of youth
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14
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Stage three of youth
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Stage four of youth
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Stage one of adulthood
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Stage two of adulthood
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Stage three of adulthood