Which of the following does NOT relate to and support efficiency in nerve conduction?
A. Myelin increases conduction speed.
B. Myelination rates increase across the lifespan from infancy to old age.
C. Humans have a greater proportion of white matter to gray matter.
D. IQ varies among individuals with the degree of myelination.
Answer: B
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In explaining color vision, contemporary researchers claim that at the level of the cones, color vision occurs via a(n) ____ process, but in the thalamus and visual cortex, the process is a(n) ____ one
a. opponent-process; trichromatic b. trichromatic; opponent-process c. trichromatic; additive d. opponent; subtractive
Frank and Magda wonder if their four year old son Noah, who is left-handed, is at risk for any developmental problems. As an expert in early childhood development, you mention to them that being left-handed appears to be connected to ____.
A. dyslexia B. autism C. attention deficit hyperactivity disorder D. failure to thrive
Mario found a +0.80 correlation coefficient between temperature and ice cream consumption. He was able to conclude:
a. Higher temperatures make people eat more ice cream. b. Eating ice cream makes people hot. c. There is a strong relationship between temperature and ice cream consumption. d. There is a weak relationship between temperature and ice cream prices.
The billions of neurons in the brain are accompanied by an almost equal number of other cells whose function is to support the neurons in a variety of ways. These cells are called
a. effector cells. b. glial cells. c. vesicles. d. myelins.