A major disadvantage of using laboratory observation in a research study is tha
a. the presence of researchers may cause participants to act differently than they would in their natural surroundings.
b. it can be used only for explaining behavior and not for describing it.
c. it is often considered unethical.
d. researchers have less control of the situation than they do in a naturalistic observation.
Answer: a
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The item-total correlation is a statistic that gives information on
a) item difficulty b) item discrimination c) item distraction d) item complexity
Regarding teaching styles, which of the following statements is TRUE?
a. At present, it looks as if a balance of teaching styles goes hand in hand with a balanced education. b. Direct instruction is somewhat better when learning is measured by tests of abstract thinking, creativity, and problem-solving. c. Discovery learning is slightly better when learning is measured by use of achievement test scores. d. Direct instruction tends to produce students who are more independent, curious, and positive in their attitudes toward school.