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9-15-08 - Psychology 206 Class Notes CHAPTER#4 WHAT CAN WE...

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Psychology 206 – Class Notes – 9/15/08 CHAPTER #4: WHAT CAN WE DO??? Controlling confounds (2 ways): - We cannot deal with EVERY confound o Eliminate source of confound IF POSSIBLE (cannot eliminate gender) o Eliminate the effect of a confound (again, IF POSSIBLE) Hold constant Balance Sometimes person A is in group 1 Sometimes person A is in group 2 Sometimes person B is in group 1 Sometimes person B is in group 2 DESIGN ISSUES IMPORTANT: Anytime we are working with human participants, be VERY clear when instructing participants on what they are supposed to do. I.E – Create CLEAR AND CONSISTENT instructions for the participants. o Be sure the instructions are consistent and clear Create written instructions (in order to maintain consistency)
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DESIGN ISSUES: Avoid order effects by counterbalancing. Be aware of the possibility of carryover effects (including response set ).
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