Which neurobiological change is associated with aging?

• A. Reduced neuroplasticity and ability to learn new skills
• B. Increased neuroplasticity
• C. No change
• D. Faster learning

Answer: (A)

Neuroplasticity is the brain’s ability to rewire connections in response to learning and experience. As people age, this capacity generally declines. There’s less synaptic remodeling, reduced dendritic growth, lower efficiency of long-term potentiation in learning circuits, and fewer growth factors like BDNF to support new connections. These changes make it harder to acquire new motor or cognitive skills, so learning tends to be slower in older adults. That’s why the statement describing reduced neuroplasticity and a diminished ability to learn new skills best matches aging. The other possibilities—neuroplasticity increasing, no change, or faster learning—don’t align with how aging typically affects the brain, even though consistent practice and physical activity can help preserve plasticity to some extent.