Interestingly, loss of gray matter in the maturing brain is related to more cognitive complexity. This is believed to be because of all of the following EXCEPT
a. adding and maintaining even unused connections
b. synaptic pruning
c. improvements in existing capacities rather than acquisition of new capabilities
d. stronger, more efficient connections
Ans: a
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A child who is diagnosed with a learning disability must meet all EXCEPT which of the following criteria? a. The child has difficulty mastering an academic subject
b. The child has normal intelligence. c. The child is not suffering from any other condition that would explain the poor performance. d. The child has an absence of adaptive skills and has difficulties adjusting to their surroundings.
Paul is a fifty-five-year-old man who has been having some difficulty recalling important details. On visiting a doctor, he was told that he was in the early stages of Alzheimer's disease. The deficiency of__________is most likely to be linked to Paul's condition
A) prolactin B) acetylcholine C) serotonin D) gamma-aminobutyric acid E) Select
Myelinated axons consume less energy than unmyelinated axons because ______.
A. action potentials occur faster B. the sodium-potassium pumps have less work to do C. graded potentials do not consume energy D. the sodium-potassium pumps are more efficient on these neurons
Which of these psychological disorders appears to have a hereditary component?
a. Bipolar disorder c. Schizophrenia b. Personality disorders d. All of these