Describe what is known about the development of right- and left-handedness both in the United States and across the world
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Handedness emerges during infancy, usually by 2 to 3 months of age. You can test this
by placing a rattle or another toy in the infant's hand. If you place it in the infant's right
hand, he or she will generally hold the rattle longer than if you place it in the left hand.
Although handedness may be influenced somewhat by the environment, the
consistently high percentage of right-handedness around the world, and even among
other species (such as parrots), strongly suggests that handedness is due to wiring
within the brain. Left-handedness is associated with language problems (such as
dyslexia), stuttering, and even health problems such as allergies. On the other hand, it is
also associated with creativity and mathematical ability.
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Reflexes
a. always disappear within six months after birth. b. are unnecessary but exist anyway. c. often have survival value. d. never disappear.
What are some differences between quasi-experimental and experimental designs?
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What is the file drawer problem, how is it related to overrepresentation, and how does do these two factors impact scientific progress?
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Humans are biologically primed to be especially susceptible to certain kinds of acquired fears
Indicate whether this statement is true or false.