lab 4 - John Robinson Psy 418 Lab Disner 2-19-2011 Lab #4...

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John Robinson Psy 418 Lab Disner 2-19-2011 Lab #4 1. History a. A history confound is when some extra-experimental event occurs that effects the Dependent variable. It usually happens during an experiment with a long duration i. An experiment done in August that measures people’s attitudes after an hour of running on a track while taking an energy supplement. The results are negative attitudes at first, but change to positive during September. The end of the summer heat causes the attitudes of the participants to change from negative to positive as it becomes more comfortable ii. An alternative experiment that would resolve this problem would be to conduct the research indoors, perhaps on a treadmill. 2. Maturation a. A maturation confound is one that occurs over a long period of time, as the participants grow and develop, thus altering the results of the experiment over time. i. A study on a new speech therapy program for two year olds, who cannot yet talk, is found to be ineffective at first, but as the children grow, the results change to
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This note was uploaded on 06/09/2011 for the course PSY 418 taught by Professor Haley during the Spring '08 term at University of Texas at Austin.

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lab 4 - John Robinson Psy 418 Lab Disner 2-19-2011 Lab #4...

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