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5 Written questions

5 Matching questions

  1. placebo control groups
  2. ecological generalizability
  3. analysis of covariance
  4. mortality:
  5. trend study
  1. a the degree to which results of a study can be applied to to other settings or conditions
  2. b used to survey different samples from a population whose members may change over time
  3. c participants are given a treatment unrelated to the real treatment
  4. d this tests the main and interaction effects of categorical variables on a continuous dependent variable, controlling for the effects of selected other continuous variables that covary with the dependent variable
  5. e participant matching and omission

5 Multiple choice questions

  1. a statistical procedure for examining the results of several research studies on the same topic and determining the congruence and divergence of outcome data
  2. participants receive no treatment at all
  3. random selection, random assignment
  4. random selection, random assignment
  5. 1. Standardize the conditions in which the study occurs.
    2. Know the characteristics of the participants in the study
    3. Know the details of the study, such as where, when, and the extraneous events that may occur
    4. Plan and chose a suitable design

5 True/False questions

  1. Methods of Control:randomization
    random assignment
    using participants as their own controls
    analysis of covariance


  2. content-related evidenceasks the question of whether the instruments and the sample accurately represent the variable under study. A researcher would ask whether the questions used in the instrument adequately assess the variable under study. To ensure content-related validity, researchers should look over the content and format of the instrument to be used


  3. survey researchdescribes the characteristics of a population by selecting a representative sample of respondents to research


  4. statistical regressionomitting extreme scores, randomization


  5. random assignmenta randomization process that is usually done after the research participants are selected to determine which participants will receive which value of the independent variable