A researcher has conducted an experiment in which she assigned all of her students four hours of homework the night before a test; in order to see what effect the extra stress has on test performance
The study is flawed because the researcher did not include a(n) __________
a) control group.
b) experimental group.
c) independent variable.
d) dependent variable.
a
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Compared to monolingual children, those who are multilingual __________.
a. have more problems detecting mistakes in grammar b. score lower on general measures of cognitive ability c. have poorer metalinguistic skills d. have better metalinguistic skills
____ is the inevitable biological aging that takes place in all members of the human species, as it takes place in all living organisms,
whereas ____ is the decline in physical functioning that takes place due to lifestyle behaviors such as unhealthy diet, insufficient exercise, and substance use, as well as environmental influences such as pollution. a. Tertiary aging; vertical aging b. Vertical aging; tertiary aging c. Primary aging; secondary aging d. Secondary aging; primary aging