logging in or signing up Week 2 Experimental designs physioactive 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: 3773 Category: Education License: All Rights Reserved Like it (6) Dislike it (0) Added: January 22, 2008 This Presentation is Public Favorites: 0 Presentation Description University: Queen Margaret University, Edinburgh Lecturer: Chee- Wee Tan Module: P1112 Comments Posting comment... By: apocalypse21 (38 month(s) ago) hi, im interested about ur presentation, quite need it for some report, can u gve me the favor of downloading ur presentation about experimental designs? ur help would be much appreciated, thank you! Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Experimental Designs: Experimental Designs Chee-Wee Tan P1112Different Types of Methods: Different Types of Methods Research designs are like house blue-prints Designs: Observational Quasi-experimental ExperimentalObservational Method: Observational Method Obviously, observing! Example: Back pain observation Disadvantages: Long periods of observation No cause-effect informationTerminology: Terminology 2 types of variables: Independent DependentExperimental Designs: Experimental Designs Cause & Effect Difference between experimental & quasi-experimental? Experimental Controlled manipulation of independent variable Quasi-experimental Incomplete control of independent variableQuasi-experimental design: Quasi-experimental design Issues in quasi-experimental design Handwashing example Problems with experimental design In some cases, ethical or practical considerations Quasi-experimental Provides alternativeTypes of quasi-experimental design: Types of quasi-experimental design One group post-test design One group pre-test/post-test design Interrupted time series design One group post-test designTypes of quasi-experimental design: Types of quasi-experimental designExperimental designs: Experimental designs 2 types of experimental designs Between groups / independent measures Repeated measures / within subjects ???Randomisation: Randomisation Placing participants randomly into the groups Purpose: prevent our own bias in influencing allocation Do stats and prosper! I love statsBetween group designs: Between group designs Different groups of participants for different conditions Advantages: Simple Practice and fatigue not a problem Between group designs: Between group designs Disadvantages: More tedious Less sensitive to detect any experimental effects Examples of between group designs: Examples of between group designs Post-test only / control group design Pre-test / post-test control groupRepeated Measures: Repeated Measures Participants allocated to all conditions Advantages: More economical More sensitive in detecting effects Disadvantages: ‘Carry over’ effect Intervention must be reversibleMore designs: More designs Multiple levels of the independent variable designs Multi-factorial designs Latin square designs Multivariate designs Single-subject experimental designsWhy are research designs important?: Why are research designs important? Exclude unknown factors Makes it easier for interpretation A warrior knows his research designs as intimately as his own weapon……..Grrrrrr Me! You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Week 2 Experimental designs physioactive 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: 3773 Category: Education License: All Rights Reserved Like it (6) Dislike it (0) Added: January 22, 2008 This Presentation is Public Favorites: 0 Presentation Description University: Queen Margaret University, Edinburgh Lecturer: Chee- Wee Tan Module: P1112 Comments Posting comment... By: apocalypse21 (38 month(s) ago) hi, im interested about ur presentation, quite need it for some report, can u gve me the favor of downloading ur presentation about experimental designs? ur help would be much appreciated, thank you! Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Experimental Designs: Experimental Designs Chee-Wee Tan P1112Different Types of Methods: Different Types of Methods Research designs are like house blue-prints Designs: Observational Quasi-experimental ExperimentalObservational Method: Observational Method Obviously, observing! Example: Back pain observation Disadvantages: Long periods of observation No cause-effect informationTerminology: Terminology 2 types of variables: Independent DependentExperimental Designs: Experimental Designs Cause & Effect Difference between experimental & quasi-experimental? Experimental Controlled manipulation of independent variable Quasi-experimental Incomplete control of independent variableQuasi-experimental design: Quasi-experimental design Issues in quasi-experimental design Handwashing example Problems with experimental design In some cases, ethical or practical considerations Quasi-experimental Provides alternativeTypes of quasi-experimental design: Types of quasi-experimental design One group post-test design One group pre-test/post-test design Interrupted time series design One group post-test designTypes of quasi-experimental design: Types of quasi-experimental designExperimental designs: Experimental designs 2 types of experimental designs Between groups / independent measures Repeated measures / within subjects ???Randomisation: Randomisation Placing participants randomly into the groups Purpose: prevent our own bias in influencing allocation Do stats and prosper! I love statsBetween group designs: Between group designs Different groups of participants for different conditions Advantages: Simple Practice and fatigue not a problem Between group designs: Between group designs Disadvantages: More tedious Less sensitive to detect any experimental effects Examples of between group designs: Examples of between group designs Post-test only / control group design Pre-test / post-test control groupRepeated Measures: Repeated Measures Participants allocated to all conditions Advantages: More economical More sensitive in detecting effects Disadvantages: ‘Carry over’ effect Intervention must be reversibleMore designs: More designs Multiple levels of the independent variable designs Multi-factorial designs Latin square designs Multivariate designs Single-subject experimental designsWhy are research designs important?: Why are research designs important? Exclude unknown factors Makes it easier for interpretation A warrior knows his research designs as intimately as his own weapon……..Grrrrrr Me!