In a brief essay, describe the researcher-related and participant-related threats to internal validity. Choose one researcher-related threat and one participant related threat and discuss experimental procedures that could be used to guard against each threat

What will be an ideal response?


Rejoinder
Students should briefly describe the researcher-related threats: experimenter effect, observer bias, researcher attribute effect. Second, students should describe the participant-related threats: the Hawthorne effect, testing effect, maturation, experimental mortality, selection biases, intersubject biases, and compensatory rivalry. See page 206-208 for a discussion of these threats and strategies for alleviating them.

Communication & Mass Media

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As a new professor, Ingrid, was preparing her first lecture for her sophomore American history class. She wanted to begin with humor, as she believed it would set a good tone between her and her students

All of the following would be good ideas EXCEPT _____. A. using a funny quote by President Taft B. showing a political cartoon from the New York Times C. starting with, "you're going to really think this is funny…" D. using an analogy between her first day in a college history class

Communication & Mass Media

Examples of ________ roles are giving and seeking information in order to help a group move

toward its goals. Fill in the blanks with correct word

Communication & Mass Media

Which stage of relationship development does a traditional wedding ceremony best ?t?

A) bonding B) differentiating C) circumscribing D) integrating

Communication & Mass Media

Willie is giving a speech on Stonehenge. He carries around a model of part of Stonehenge, but one of the audience members looks at the model and tries to figure out what the mathematical symbol for pi that Willie is carrying has got to do with Stonehenge. What mistake did Willie make?

A. He confused the audience by creating an overly complex visual aid that was easy to misinterpret. B. He brought in a model that was boring and the audience did not notice it. C. He did not pass the model around while he was discussing it. D. He did not explain his visual aid because he assumed the audience would recognize it as a model of the monument.

Communication & Mass Media