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Quiz 11 :

Validity of Research Results in Quantitative, Qualitative, and Mixed Research

Quiz 11 :

Validity of Research Results in Quantitative, Qualitative, and Mixed Research

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Identify and explain the types of evidence that are needed to reach a causal conclusion.
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When scores improve simply due to having taken a pretest, this threat to validity is called:
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Explain the threats to external validity and when they might exist in a research study.
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Identify and explain the types of validity or legitimation used in mixed research. Multiple Choice
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Which of the following statements is true?
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Explain the role of operationalization of constructs in research.
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Explain the meaning of statistical conclusion validity, construct validity, internal validity, and external validity and their importance in the research process.
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Explain the meaning of confounding variables.
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When an extraneous variable systematically varies with the independent variable and influences the dependent variable, it is called:
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A researcher does a one-group pretest-posttest study where she examines the effects of a reading program on children's reading comprehension level. She finds that the students' scores at the end of the school year are higher than at the beginning of the school year. She attributes the changes to the reading program. Her colleague argues you would expect that the children would improve anyway from the beginning of the year to the end of the year. Her colleague is arguing that the results are potentially due to:
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A state passes a law requiring mandatory seatbelt use and claims it has reduced traffic fatalities. At the same time that the seatbelt law was changed, speed limits were also reduced from 70 MPH to 55 MPH by the federal government. Traffic fatalities decreased during the first year of the seatbelt law. The change in the speed limits represents what kind of threat to internal validity?
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A researcher does a study of a mathematics program in a one-group pretest-posttest design. She gives the group of second graders a multiple-choice pretest. Unknown to her, the children had never taken a multiple-choice test. The children scored higher on the same test given at posttest. She argues that the children improved because of the mathematics program. That the children had never taken a multiple-choice test before and showed improvement at posttest suggests that one possible threat to her conclusion is a:
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Identify and explain the types of validity or trustworthiness used in qualitative research.
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Explain the threats to internal validity and be able to identify when they might exist in a research study.
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When an unplanned event occurs during the course of the study that might influence the dependent measure, this is a called:
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A researcher conducts an experiment on memory strategies where the research assistant unknowingly runs control participants only in the afternoon and the experimental group only in the morning. Time of day in this case very well might be a(n):
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To infer causality, three conditions must be met. One of them is that:
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An extraneous variable is:
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When physical or mental changes occur in individuals, that influences their scores on the dependent variable(s). This is called:
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When the researcher can draw clear causal conclusions from what went on in a study, this is called:
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