PSY 3171 Chapter Notes - Chapter 3: Reduced Affect Display, Insomnia, Rorschach Test
22 Feb 2014
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Significance: statistical significance unlikely to have occurred by chance, clinical significance whether the intervention has practical utility, clinical significance: is the effect that treatment has big enough to use this treatment. If you have enough people in your group you will find statistical significance huge sample sizes not always good. Polling, weight, depression, iq: reliable measures contain less error, but there will always be some. We can never control all the factors that could be influencing someone"s performance on a given test. In experiments, we try to cut down the error as much as realistically possible: always going to have some error in the data. Ask questions to try and lower error: control by manipulating who"s in your study. Only having people in the study that dont drink coffee: cant do these things in a clinical setting dealing with one person and wanting to know their diagnosis.
