The complexity and efficiency of neural networks improve during early childhood over levels in infancy due to ___________
a. reduced use of glucose
b. growth of dendrites and myelination of neuron pathways
c. a decrease in synaptic density in the prefrontal cortex by age 3 1/2 years
d. a decrease in the growth of gray matter until age 24 months
Answer: B
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Information about _____ travels to the spinal cord and brain more quickly than information about _____
A) pain; touch B) pain; vision C) touch; pain D) touch; vision
Broadbent believed that our attention is selective because
a. we want to make as little effort as possible. b. not all information is important to us, and so we filter out the unimportant and leave only the essential. c. the brain mechanisms involved in conscious processing of information have a limited capacity. d. humans tend to avoid information that is threatening to the self. e. the environment contains more information than any processor could possibly absorb.