Which statement about synapses is true?
A) Synapses decrease dramatically during the first year.
B) Synapses are tiny gaps between neighboring neurons.
C) Synapses are pruned during myelination.
D) Synapses are responsible for myelination.
Answer: B
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Dr. Taylor is conducting a study to test the effect of a new drug on people's ability to concentrate at work. His research sample consists of 100 US adults. During a 14-week period, half of the sample is administered the drug and the other half is administered a placebo, and participants' concentration abilities are continually tracked. In the context of this study, if Dr. Taylor uses random
assignment, it means that ____. a. his study will be high in external validity b. the 100 adults in his study are likely to be representative of the larger population of interest c. each research participant has an equal chance of being assigned to each level of the independent variable d. his research findings are likely to be statistically significant
Ella is 4 years old and expanding her schema regarding dogs. The dog that she knows the best is her neighbor’s golden retriever, Gus. She was recently told by her neighbor that dogs like to roll in grass with distinctive, or “smelly,” odors. Under what circumstances is she most likely to extend that fact to all dogs?
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