Primary abstinence means ____
a. never having engaged in vaginal intercourse
b. not currently engaging in vaginal intercourse
c. the intention to never engage in vaginal intercourse
d. never using any method except withdrawal during vaginal intercourse
A
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On a camping trip, Eleni accidentally steps on a hot coal from the campfire. Upon touching the coal, her foot reflexively withdraws from the coal. What is the sequence of response in Eleni's neurons?
a. Sensory neuron – interneuron – motor neuron b. Sensory neuron – motor neuron – interneuron c. Motor neuron – interneuron – sensory neuron d. Motor neuron – sensory neuron – interneuron e. Interneuron – sensory neuron – motor neuron
Which of the following best describes what occurs in the brain of highly intelligent children as they become young adults?
A. The corpus callosum becomes thicker and then it thins. B. The thalamus grows more neural connections with the cortex. C. The cortex, that was once thicker than normal in childhood, thins. D. The cortex continues to thicken.
Answer the following statements true (T) or false (F)
1. The heritability coefficient of intelligence provides a rough estimate of how much of an individual's intelligence is determined by genes and how much of it is determined by environmental factors. 2. In a large and diverse population, at least 50% of the variability in intelligence scores can be accounted for by genetic factors. 3. The heritability coefficient of intelligence is lower in children from low-income families than it is in children from high-income families. 4. As environments become more similar, the heritability coefficient of intelligence decreases. 5. Increases in the genetic similarity of a population are associated with an increased heritability coefficient of intelligence.
Which structure provides the main source of input to the cerebral cortex?
A. Limbic system B. Medulla C. Thalamus D. Hypothalamus