Exam 10: Field Research
Describe the laboratory-field experiment continuum. What factors define this continuum?
The laboratory-field experiment continuum refers to the range of experimental settings in which scientific research can be conducted, from highly controlled laboratory environments to real-world field settings. This continuum allows researchers to choose the most appropriate setting for their specific research questions and goals.
Several factors define this continuum, including the level of control over variables, the degree of realism and ecological validity, the potential for generalizability of results, and the ethical considerations involved. In laboratory experiments, researchers have a high level of control over variables, allowing for precise manipulation and measurement. However, these settings may lack the realism and ecological validity of field experiments, which take place in natural or real-world environments. Field experiments offer greater external validity and the potential for generalizability to real-world situations, but they may also be more challenging to control and replicate.
Other factors that define the laboratory-field experiment continuum include the cost and feasibility of conducting research in different settings, the ethical considerations involved in manipulating variables in real-world environments, and the potential for unexpected confounding variables in field settings. Ultimately, the choice of experimental setting depends on the specific research question, the goals of the study, and the trade-offs between control and realism. Researchers must carefully consider these factors when designing and conducting experiments to ensure the validity and reliability of their findings.
Dr. Mlakar conducts a time series design with two treatment groups. The treatment is introduced at different times for each group. This is a(n)______ design.
B
Dr. McCormick trained coders to observe preschoolers' behavior. When reviewing the coding, she found that her coders were paying more attention to the behaviors of the more active children. Which type of bias was likely operating?
Compare and contrast field experiments and laboratory experiments. What are the advantages and disadvantages of each type of research?
"Going native" in participant observation studies means that the observer
_______ is a record of what is actually observed; ______ is grounded in how coders interpret it.
Which type of participant observation raises the greatest ethical concerns? Which raises the fewest concerns? Explain your reasoning.
What is analysis of covariance and when would it be used in the statistical analysis of a quasi-experiment?
Ideally, the members of the control group in a nonequivalent control group quasi-experiment will
Describe the factors that researchers should consider when choosing a setting for a field study. What factors define a good setting?
What is a quasi-experiment and how is it similar to a natural experiment? In what important way does it differ from a natural experiment?
Distinguish between an interrupted time series design and an equivalent time samples design.
Of the following, which is the greatest threat to the internal validity of even a well-designed nonequivalent control pretest-posttest group design?
What are broad versus narrow coding categories? Give an example of each.
Explain the logic of using a time series design for a research study.
Cell phone Company A adds a new charge for customers who use too much data each month; Company B does not have this charge. A marketing researcher is given access to the data usage records for both companies, starting 30 months before and ending 30 months after the charge was instituted. She found that excessive data usage declined dramatically for Company A's customers but that there was no reduction in data usage for Company B's customers. The researcher used a(n) ________ design for her study.
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