What happens after infants have been babbling for a couple of months?
a. They begin making holophrases.
b. They cease to babble in sounds they have not heard used by the people around them.
c. They begin gesturing along with babbling.
d. They begin to make sounds to which they are not exposed.
B. After a couple months, infants begin to babble in the sounds distinctive to their culture and cease to babble in sounds they have not heard used by the people around them.
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Shannon is a researcher who studies sleep patterns in humans. Shannon most likely uses __________
a) laboratory observation. b) only adult participants. c) naturalistic observation. d) structured observation.
Christina, who is working on her research design for her senior thesis in her development class, announces she wants to do a true experiment to explore alcoholism and Alzheimer's. What do you say to her, and why?
a) True experiments are very difficult to do in development because you cannot have truly random group assignments. b) True experiments are very difficult to do in development because they are time-intensive. Consider This: It can be difficult to control for extraneous variables. LO 1.6: Analyze research methods, behavioral measures and analyses methods and experimental design c) True experiments are very difficult to do in development because it is impossible to have a control group. Consider This: It can be difficult to control for extraneous variables. LO 1.6: Analyze research methods, behavioral measures and analyses methods and experimental design d) True experiments are very difficult to do in development because they are so hard to analyze. Consider This: It can be difficult to control for extraneous variables. LO 1.6: Analyze research methods, behavioral measures and analyses methods and experimental design