| 1. Interobserver reliability is to __________ as intraobserver reliability is to __________. |

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| 2. The use of typical cases is an example of __________ while the use of clusters is an example of __________. |

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| 3. Statistical regression is a threat to the internal validity of a study whenever: |

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| 4. Probability sampling and methods of survey administration contribute __________ error compared to question wording. |

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| 5. In __________ sampling, the population is classified into subgroups and simple random samples are taken from each subgroup. |

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| 6. Recording units of behavior such as licking, walking or crying is an example of using a(n) __________ description. |

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| 7. Hartup recorded the type and frequency of aggressive behaviors seen in preschool children. He employed a(n) __________. |

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| 8. An elaborate, sometimes pictorial, system for classifying the behavior of a species is called: |

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| 9. Which of the following is NOT a factor that is known to influence error? |

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| 10. Which of the following is NOT a serious threat to validity of the pretest-posttest one-group design, O X O, is ___________. |

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| 11. The pretreatment observations in the interrupted time-series design are like the in a single-case experiment. |

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| 12. The comparison group in a nonequivalent control group design is called nonequivalent because __________. |

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