Psych 1A03 Midterm Review - Psych 1A03 M idterm Review...

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Unformatted text preview: Psych 1A03 M idterm Review Research Methods The Scientific Method The Seven Steps: formulate a theory, formulate a hypothesis, select a research method, data collection, data analysis, report findings and revise theory. YOU WHAT BE ASKED WHAT THE 7 STEPS ARE. Theory vs. Hypothesis- A theory is an idea about what might be happening in the world; must be testable; theory always comes first- A hypothesis is a prediction about specific variables; I t must be related to a method; hypothesis comes second Experiment/Theory: Video Games and Distance- The Theory: Regular video game play improved an individuals ability to accurately perceive distance- Hypothesis: regular video gamers will perform more accurately Key Concepts in an Experiment Independent Variable: the variable youre manipulating; the thing you change; Example: Whether someone is a video game expert or not Dependent Variable: the variable that youre measuring; Example: accuracy in a distance judgement task- I ts important to be sure any changes in your dependent variable are due to manipulations in the independent variable- You need a GOOD control group Experimental Group: a group of objects receiving the experimental manipulation; Example: 10000 hours of video game experience Control Group: A group of objects subjects not receiving the experimental manipulation- The control group s must be exactly the same except the experimental manipulation; Control groups allow you to be sure your results are due to the independent variable manipulation Extraneous Variables: anything that you didnt control for that may influence your dependent variable; Example: same people may be naturally better at judging distance. Random Sampling: everyone in your population has an equal probability of being a part of your study A New Experiment Our video game example is a BETWEEN SUBJECTS DESIGN New Theory: Accurate distance representations depende on an adequetly high light level in the room. Hypothesis: Subjects should estimate distance less accuraelt when tested in low light compared to high light conditions- This can be examined with a WITHIN SUBJECTS DESIGN; That means were comparing the same subjects twice Correlation and Causation Three Correlational Methods 1) Naturalistic Observation- Useful for knowing what really happens- Cant establish what actually caused the behaviours 2) Case Studies- Can confirm previous hypothesis- Hard to generalize to the whole population 3) Questionnaires- Gets at behaviours that cant be observed through experiments Basic Statistics Samples and Populations- You can have a small sample size of a large sample size...
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This note was uploaded on 08/04/2008 for the course PSYCHOLOGY 1A03/1Z03 taught by Professor Kim during the Fall '08 term at McMaster University.

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Psych 1A03 Midterm Review - Psych 1A03 M idterm Review...

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