Research Methods It is actually way more exciting than it sounds!!!!

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It is actually way more exciting than it sounds!!!!
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Presentation transcript:

Research Methods It is actually way more exciting than it sounds!!!!

Why do we have to learn this stuff? Psychology is first and foremost a science. Thus it is based in research. Before we delve into how to do research, you should be aware of three hurdles that tend to skew our logic.

Hindsight Bias The tendency to believe, after learning the outcome, that you knew it all along. Monday Morning Quarterbacking!!! After the Chris Brown/Rihanna incident….my wife said she knew Chris Brown was a violent kid!!! Did she really?

Overconfidence We tend to think we know more than we do. 82% of U.S. drivers consider themselves to be in the top 30% of their group in terms of safety. 81% of new business owners felt they had an excellent chance of their businesses succeeding. When asked about the success of their peers, the answer was only 39%. (Now that's overconfidence!!!)

The Barnum Effect It is the tendency for people to accept very general or vague characterizations of themselves and take them to be accurate.

Applied V. Basic Research Applied Research has clear, practical applications. YOU CAN USE IT!!! Basic Research explores questions that you may be curious about, but not intended to be immediately used. Research on therapies for drug addicts has a clear purpose. Studying how kissing changes when you get older is interesting…but that’s about it.

Terminology

Hypothesis Expresses a relationship between two variables. A variable is anything that can vary among participants in a study. Participating in class leads to better grades than not participating.

Independent Variable Whatever is being manipulated in the experiment. Hopefully the independent variable brings about change. If there is a drug in an experiment, the drug is almost always the independent variable.

Dependent Variable The dependent variable would be the effect of the drug. Whatever is being measured in the experiment. It is dependent on the independent variable.

Operational Definitions Explain what you mean in your hypothesis. How will the variables be measured in “real life” terms. How you operationalize the variables will tell us if the study is valid and reliable. Let’s say your hypothesis is that chocolate causes violent behavior. What do you mean by chocolate? What do you mean by violent behavior?

Sampling Identify the population you want to study. The sample must be representative of the population you want to study. GET A RANDOM SAMPLE. Stratified Sampling

Experimental Method Looking to prove causal relationships. Cause = Effect Laboratory v. Field Experiments Smoking causes health issues.

Strengths and Weaknesses of Experimental Research Take 2 minutes to write down a short list of strengths and weaknesses of the Experimental Method: Strengths: – conclusions about cause-and-effect can be drawn – Probabilistic causality Weaknesses: – artificial nature of experiments – ethical and practical issues