Longitudinal research reveals that the IQ scores of most children during childhood and adolescence?

Longitudinal research reveals that the IQ scores of most children during childhood and adolescence typically show an increase over time. This increase is gradual, and there may be fluctuations in IQ scores at different stages of development. While some children may experience a decline in IQ scores, the majority tend to show a positive growth trajectory in intelligence over time.

One well-known longitudinal study on IQ is the Edinburgh Study of Growth and Health, which followed a cohort of children born in Scotland from childhood through adulthood. The study found that IQ scores increased from childhood to adolescence, reaching a peak in early adulthood, and then gradually declined with advancing age.

However, it's important to note that IQ is not the sole indicator of a child's intelligence or potential for success. Other factors, such as emotional development, creativity, and social skills, also play significant roles in a child's overall development and life outcomes.