easy · LSAT Reading Comprehension
For a long time, the prevailing view held that the brain's structure was fixed once childhood ended. This view drew support from a familiar clinical observation: when adults suffer brain injuries, the resulting functional deficits are typically permanent, whereas children who sustain comparable injuries frequently regain lost functions.
According to the passage, observations of brain injuries supported the traditional 'fixed brain' view because:
- adults rarely recovered lost functions after a brain injury, while children often did, suggesting the adult brain could no longer rebuild itself
- adults are considerably more inclined than children are to take part in the kinds of risky physical activities that tend to lead to serious head injuries
- the brain-imaging technology that was available in that earlier era was simply far too primitive to observe the living brain at the very moment of an injury
- the hippocampus happens to sit in a protected position that shields it from most of the ordinary forms of traumatic physical damage to the brain
- adult brain injuries were repeatedly found to heal over completely, every time, whenever a sustained course of proper rehabilitation was duly provided
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