Chapter 2 Research Process Part 2: Aug. 31, 2011.

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Presentation transcript:

Chapter 2 Research Process Part 2: Aug. 31, 2011

Research Process steps (cont.) Random sampling and random assignment – RS: – RA: – Results of random sampling example: – Results of random assignment example:

Experiment Examples – From book, Greitemeyer (2009) “song lyrics and helping” Manipulation? Results? – (not in book), Schneider et al (2001) “harassment and heart rate” Manipulation? Results?

The Correlational Method: determines if two variables are related – Correlation coefficient: Positive, negative, or no correlation? Cannot make cause-effect conclusions. – Often a third variable can explain relations between 2 variables under study – Example? Need experiments to determine cause-effect

Experimental Methods: manipulate variables in attempt to examine cause  effect About 3/4ths of Social Psych research. Most is done in lab settings. 2 distinguishing factors: – 1. – 2.

Advantages of Correlational vs. Experimental Research Adv of Corr Research: – 1) – 2) Adv of Exp Research: – 1) – 2)

Step 4: Interpreting results Independent variables: what is manipulated – Examples? Song lyrics study – Harassment study – Dependent variables: observed to determine impact of IV – Examples? Song lyrics study – Harassment study -

Subject variables: cannot be manipulated – Examples -