Which statement about increases in cognitive abilities is true?

Which statement about increases in cognitive abilities is true?

• A. Maturation of the hippocampus allows for complex activities such as planning and metacognition
• B. Expansion of the synapses leads to increases in cognitive abilities
• C. Increases due to growth in the size of the brain
• D. Changes in levels of neurotransmitters lead to an increase in sensation seeking

Answer: (B)

Neural connectivity and the brain’s ability to reorganize itself underlie improvements in cognitive abilities. When synapses expand, there are more pathways for information to travel and more opportunities for learning and problem-solving. This greater connectivity supports more complex thinking, better memory integration, and flexible reasoning, which shows up as higher cognitive functioning. Think of it this way: cognitive growth comes from how effectively brain networks can communicate, adapt, and refine themselves. While brain size or specific regional maturation plays a role, the key driver for gains in cognition is the development and refinement of connections across networks, aided by synaptic plasticity and later optimization through pruning and myelination. The other statements shift the focus to aspects that don’t best capture how cognitive abilities typically increase. Planning and metacognition rely heavily on higher-order executive networks, not solely on maturation of the hippocampus. Brain size by itself isn’t a reliable predictor of cognitive gains, since efficiency and organization matter more than volume. And changes in neurotransmitter levels that alter sensation seeking describe motivation and behavior more than direct improvements in cognitive processing.

Neural connectivity and the brain’s ability to reorganize itself underlie improvements in cognitive abilities. When synapses expand, there are more pathways for information to travel and more opportunities for learning and problem-solving. This greater connectivity supports more complex thinking, better memory integration, and flexible reasoning, which shows up as higher cognitive functioning.

Think of it this way: cognitive growth comes from how effectively brain networks can communicate, adapt, and refine themselves. While brain size or specific regional maturation plays a role, the key driver for gains in cognition is the development and refinement of connections across networks, aided by synaptic plasticity and later optimization through pruning and myelination.

The other statements shift the focus to aspects that don’t best capture how cognitive abilities typically increase. Planning and metacognition rely heavily on higher-order executive networks, not solely on maturation of the hippocampus. Brain size by itself isn’t a reliable predictor of cognitive gains, since efficiency and organization matter more than volume. And changes in neurotransmitter levels that alter sensation seeking describe motivation and behavior more than direct improvements in cognitive processing.