All phonemes are letters of the alphabet.
Answer the following statement true (T) or false (F)
False
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Dr. Prutherow believes that people who are under stress will develop more colds than people who are not under stress. When he randomly selects 10 participants and exposes them to high levels of stress, he finds that 9 of the participants develop colds. Based on these results, he concludes that stress causes an increase in colds. Dr. Prutherow's reasoning may be flawed because in this study,
a. there was no dependent variable in his study. b. there was no control group for comparison. c. he didn't formulate a hypothesis before he collected his data. d. he didn't measure the independent variable when the study ended.
Groups are unlikely to develop groupthink if the ____
a. group members are extremely similar to one another b. group has a strong, directive leader c. group members lack cohesion d. group is isolated from other people
In Clara Davis's study reported in your text, when left to choose their own diets, human infants ______.
A. chose a balanced diet over the long run B. favored a few food items C. favored food items of only one primary taste D. favored only sweet foods
An observation that the higher the air temperature, the lower the activity of test animals would be an example of a
a. negative correlation. b. positive correlation. c. causal relationship. d. zero correlation.