Q:

What age does the brain fully mature?

A:

Neuroscience research since the late 1990s shows that the brain does not reach full maturity until about age 25, reports the National Center for Biotechnology Information. The brain's frontal lobes – home of executive functions such as planning, working memory and impulse control – are among the last to develop.

Traditionally, adulthood has been defined biologically as the end of puberty and legally as either 18 or 21 years old, with the underlying assumption that the brain has finished developing by that age. The National Center for Biotechnology Information explains that adolescent risk-taking behaviors, lack of impulse control and poor judgment can result from an immature pre-frontal cortex, as that is the seat of higher-order cognitive processes. This newer understanding of brain development means that policy makers, governments and social scientists are re-evaluating legal and societal expectations for young adults. Even so, science has not identified any direct correlation between actual behavior and specific stages of brain development.


Is this answer helpful?

Similar Questions

  • Q:

    How fast do nerves regenerate?

    A:

    Nerves regenerate at a pace of 2 to 4 millimeters per day, depending on how the nerve was injured, the National Center for Biotechnology Information states. For example, a crushed nerve regenerates faster than a sectioned nerve.

    Full Answer >
    Filed Under:
  • Q:

    What does a sperm cell do?

    A:

    A sperm cell delivers its DNA to and fertilizes eggs, according to the National Center for Biotechnology Information. The BBC points out that this genetic material is contained in 23 chromosomes, which combine with the 23 chromosomes found in the female sex cell to make 23 pairs of chromosomes that contain all the genes for the new embryo.

    Full Answer >
    Filed Under:
  • Q:

    What is the normal size of a human liver?

    A:

    The average liver in a woman is 7 centimeters in length and 1200 to 1400 grams in weight, while the average male liver weighs 1400 to 1500 grams and has a span of 10.5 centimeters, according to the National Center for Biotechnology Information. The size of someone's liver depends on the persons's age, sex, body size and body shape.

    Full Answer >
    Filed Under:
  • Q:

    Can an infected tooth make you sick?

    A:

    An infected tooth can cause certain systemic diseases if not properly treated, according to the National Center for Biotechnology Information. Conditions that may be related to tooth or other oral infections include cardiovascular disease, diabetes mellitus, bacterial pneumonia and low birth weight.

    Full Answer >
    Filed Under:

Explore