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Lecture 6.Experimental Design

Lecture 6.Experimental Design - Experimental Design Cozby...

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5/20/13’ 1’ Experimental Design Cozby & Rawn Chapter 8 Dependent Variable Measure Measure Group/ Condition 2 Group/ Condition 1 Manipulate Independent Variable Measure Dependent Variable Participants Assign Participants to Conditions Goal: To control for potential selection differences (i.e., to have equivalent groups) Independent Groups Design Random assignment is used to assign different participants to the different groups Repeated Measures Design All participants complete all of the experimental conditions Matched Pairs Design Participants are matched on a characteristic then the pairs are random assigned to complete the different conditions
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5/20/13’ 2’ Independent Groups Design Repeated Measures Design Matched Pairs Design No Music Music No Music Music No Music Music Tom Sam Tom Tom Tom Jon Mary Doug Mary Mary Mary Carry Bill Jane Bill Bill Bill Phil Jason Alison Jason Jason Jason Mason Sarah Andrea Sarah Sarah Sarah Lara Let’s say we are running a study looking at the effect of listening to pop music on memory test performance. We decide to have one group listen to pop music and another group listen to no music while studying words for a memory test. Our DV is_______, our IV is ______, and there are _____ levels of the IV a) Music, Memory Test Performance, 2 b) Memory Test Performance, Music, 2 c) Music, Memory Test Performance, 3 d) Memory Test Performance, Music, 3
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Lecture 6.Experimental Design - Experimental Design Cozby...

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