logging in or signing up 3demandchar Manfred Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 80 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: February 18, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Experimental Design 3: Demand Characteristics: Experimental Design 3: Demand Characteristics Martin Ch. 4Demand Characteristics: Demand Characteristics Definition: Clues given to the participant about the point of the experiment Examples: Experiment title: The effects of horror movies on mood Obvious manipulation: Ten psychology students looking straight up Biased or leading questions: Don’t you think it’s bad to murder unborn children?Reactions to Demand Characteristics: Reactions to Demand Characteristics Cooperative “You seem like a nice person: I’ll help you get the right results” Defensive “I don’t want to look stupid/evil. I’ll do what a smart/good person is expected to do (rather than what I normally would do).” Noncooperative “This experiment is annoying. Let me screw up the results.”Sources of Demand Characteristic Effects: Sources of Demand Characteristic Effects Societal values Be cooperative, look smart, … Experimenter expectancies Consciously or unconsciously suggesting what outcomes are desired Negative feelings about being in the experiment Maybe as a result of previous bad experiencesHow to Test for the Effects of Demand Characteristics: How to Test for the Effects of Demand Characteristics Both positive + negative test questions Include other tests of social compliance See if these tests relate to performance Post-experiment debriefing Placebo controlPlacebo: Placebo What makes a good placebo? Keep all the details the same, especially things the subject is likely to develop expectations about When does the placebo effect work? Cognitively penetrable processesHow to Minimize Demand Characteristics: How to Minimize Demand Characteristics Automation Blind and double-blind Multiple experimenters Naturalistic observation Neutral test questionsDemand Characteristics Example: Mental scanning rates: Demand Characteristics Example: Mental scanning rates Cognitive penetrabilityExperiment validity examples: Experiment validity examples Course evaluation Use course evaluation forms to see which version of a class is better Evaluation of effective student behaviors Use essay test scores and questionnaire to see which studying behaviors lead to better learning You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
3demandchar Manfred Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 80 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: February 18, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Experimental Design 3: Demand Characteristics: Experimental Design 3: Demand Characteristics Martin Ch. 4Demand Characteristics: Demand Characteristics Definition: Clues given to the participant about the point of the experiment Examples: Experiment title: The effects of horror movies on mood Obvious manipulation: Ten psychology students looking straight up Biased or leading questions: Don’t you think it’s bad to murder unborn children?Reactions to Demand Characteristics: Reactions to Demand Characteristics Cooperative “You seem like a nice person: I’ll help you get the right results” Defensive “I don’t want to look stupid/evil. I’ll do what a smart/good person is expected to do (rather than what I normally would do).” Noncooperative “This experiment is annoying. Let me screw up the results.”Sources of Demand Characteristic Effects: Sources of Demand Characteristic Effects Societal values Be cooperative, look smart, … Experimenter expectancies Consciously or unconsciously suggesting what outcomes are desired Negative feelings about being in the experiment Maybe as a result of previous bad experiencesHow to Test for the Effects of Demand Characteristics: How to Test for the Effects of Demand Characteristics Both positive + negative test questions Include other tests of social compliance See if these tests relate to performance Post-experiment debriefing Placebo controlPlacebo: Placebo What makes a good placebo? Keep all the details the same, especially things the subject is likely to develop expectations about When does the placebo effect work? Cognitively penetrable processesHow to Minimize Demand Characteristics: How to Minimize Demand Characteristics Automation Blind and double-blind Multiple experimenters Naturalistic observation Neutral test questionsDemand Characteristics Example: Mental scanning rates: Demand Characteristics Example: Mental scanning rates Cognitive penetrabilityExperiment validity examples: Experiment validity examples Course evaluation Use course evaluation forms to see which version of a class is better Evaluation of effective student behaviors Use essay test scores and questionnaire to see which studying behaviors lead to better learning