Lecture 1a - Psychology & Science Cont.

Lecture 1a - Psychology & Science Cont. - 200 75 No...

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What makes for a Scientific Study?
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I. Important Aspects of a Scientific Study A. Measurable, numeric data – including instruments to measure data - Answer the following questions while “eyeballing” the corresponding figures.
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A B C 2. Which line is longer? Horizontal (A) or vertical (B)? A B 1. Which line is longer? 1. Which red circle is larger?
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I. Cont. A. Control – in the natural world phenomena often covary with each other – in the lab we can eliminate this and focus on one variable - Harlowe’s Monkeys C. Manipulation – allows us to be specific with procedures and measures
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I. cont. D. Comparison Improvement No Improvement Treatment
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Unformatted text preview: 200 75 No Treatment 50 15 Was this treatment effective? I. cont Answer is no! 50 out of 65 (76.9%) patients in the no treatment (control) group improved. 200 out of 275 (72.7%) of patients in the treatment group improved. By comparing with the control group we see that people improved at near equal rates without treatment, therefore treatment had nothing to do with improvement. Therefore, it was ineffective. Must have a comparison group! I. cont A. Elimination of alternative explanations- this is accomplished through gathering data while applying control, manipulation, and comparison- Clever Hans...
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This note was uploaded on 02/17/2011 for the course PYSC 226 taught by Professor Levens during the Fall '09 term at South Carolina.

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Lecture 1a - Psychology & Science Cont. - 200 75 No...

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