UNICEF states that the early childhood years from birth through age 8 are formative in terms of intelligence, personality and social behavior. The first two years are particularly crucial. More »

The formative years are the first few years of a child's life. During these years, basic learning and development occurs. These life basics include mental and physical development and are essential building blocks for li... More »

The average age of early-onset schizophrenia psychosis is between eight and 12 years, explains Oxford University Press. However, schizophrenia may be difficult to diagnose at such an early age as the disease most commonl... More »

Two research studies published in 2015 indicate that birth order has little to no effect on personality and only minimal impact on intelligence. Studies published in 2007 and 2003 came to the same conclusion. More »

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Some personality traits connected to birth order include firstborn children tend to be reliable and high achievers while middle children thrive on friendships and tend to act as peacemakers. Youngest children, who are ty... More »

Temperament refers to a set of innate or inborn traits that organize a child's approach to the world, while personality is what arises within the individual. Personality is acquired on top of the temperament. Temperament... More »

A good sample case study on how isolation affects a child's development is the case of Genie, a child who grew up confined to her room and almost entirely isolated from all human contact until the age of 13. This period ... More »