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Introduction to Research Concepts using the Card Probability Study Chapter 1 Thomas and Nelson
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How does the card probability study, conducted in the previous class, fit into the basic to applied research continuum? Basic: researcher has the decision to reveal a card in the switch side of the study to give the participant the choice of switching Applied: researcher has limited control when participant is in the stay study More applied: give participant to give freedom as switching or staying instead of being assigned. Set up casino and observe, make it an actual game.
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Ecological: The participant did not have a choice, not a real world setting, if placed in a casino and game actually played it would be more ecological valid More ecologically valid, less internally valid Internal validity: dealers told to shuffle In what ways was the study lacking in ecological validity? How does this relate to the internal and external validity of the study?
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Is it better to stay or switch What would have been the problem statement for the card probability study?
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1) There is no difference between probability of winning whether you switch or stay 2) staying does not lead to a higher probability of winning than staying 3) switching does not lead to a higher probability of winning than switching List three potential hypotheses that could have been put forth prior to the study.
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1) Intuition: going with your first choice and staying with it. Think switching/staying doesn’t matter 2) Tenacity: success once switching, lost 10 in a row switching but still switch 3) Empirical: watch someone switch every time and win, you switch every time 4) Authority: some one told you better to switch over stay, believe them and switch 5) Rationalistic method: don’t think it matters, 2 cards left on a turn, 50/50 chance after switching, so it doesn’t matter Provide four unscientific methods of problem solving and give an example of how each could be applied to solving our problem statement.
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Dependent: win/loss, number of wins Independent: part researcher manipulates. 2 levels: switching/staying, independent variable is the decision What were the independent and dependent variables in the study? How many levels of each independent variable were there?
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randomly assigning groups, switching or staying Establish cause/effect relationship if experimental Was the study experimental in nature? Explain
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