Brain-imaging studies have shown that there are three main spurts of brain development, and they occur at roughly six-year intervals, most commonly at ages 8, 14, and 20.

Question

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Brain development is not limited to three main spurts at six-year intervals. Brain development is a continuous process, with significant growth and changes occurring from infancy through adolescence and into early adulthood, but not necessarily at fixed ages or intervals.

Brain-Imaging Studies Have Shown That There Are Three Main Spurts