In recent studies of children with fragile X syndrome, the reason for the disorder seems to be
A) lack of synaptic pruning.
B) too much synaptic pruning.
C) exposure to an overly stimulating environment.
D) problems in the visual-motor cortex.
A) lack of synaptic pruning. In this syndrome, a defective gene suppresses the normal production of a protein that is important for synaptic pruning.
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According to the chapter They Don't Look the Same to Meabout homogeneity and heterogeneity biases,
the researchers also randomly assigned participants to view each image for different durations: half a second, one second, and four seconds. Why was this done?(a) to distract the participants from the purpose of the research (b) to vary the cognitive load of the participants (c) to make sure at least one group of participants was given enough time to remember some of the images (d) to help make sure that the researchers who showed pictures to the participants were blind to the hypotheses
If both Chinese and Americans are comparing two pieces of art, the Americans are most likely to notice
a. differences in the foreground. b. the color schemes. c. differences in how objects are oriented. d. differences in brushstrokes.