Suppose you wanted to conduct research on academic achievement during elementary and middle school.What are the advantages and disadvantages of each type of study?
What will be an ideal response?
Suggested Answer:Each answer will vary depending on the question.
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If all of the scores in a distribution are clustered closely together, the distribution has ____________
A) low variability B) high variability C) a positive skew D) a negative skew
A newspaper reporter looks for interesting stories related to weight, weight control, and obesity. In recent years, which title might he have used for a story?
a) "Leptin: A Hormone Regulating Body Fat" b) "Stomach Size: An Overlooked Factor in Hunger" c) "When It Comes to Weight, Focus on the Right Hemisphere" d) "Find the Clues to Emotion and You Find the Clues to Hunger"
Which of the following happens as an action potential is fired?
A. Ion channels along the axon suddenly close B. Ion channels along the axon suddenly open C. Na+ ions flood out of the cell D. K+ ions flood into the cell
Which of the following is the best example of the learning principle of reinforcement?
A) Sammy’s father stopped buying him candy when Sammy cried, and Sammy stopped crying for candy for a while. However, one day Sammy randomly started crying for candy again. B) Coraline trained her cats to respond in different ways to two different whistle pitches. They would come to be fed when she blew one whistle and leave when she blew the other whistle so she could clean their litter boxes. C) Five-year-old Mandy learned to write with a pencil, but she can also write with a marker, a crayon, or a pen. D) Marla audited a class, so she never took any quizzes or tests throughout the year. However, she decided she wanted to take the end-of-year final and received a very high grade without taking earlier exams. E) James drank coffee before he took and passed a difficult test with a high grade, so now he drinks coffee before every test he takes because he believes doing so will help him score well on the tests.