Müller-Lyer illusion study

You will need a Java enabled browser to use the following website. (Click the Adjust Java Security Settings link below this assignment for instructions on how to enable Java on your system.)  

Preparation:

• Use a browser other than Google Chrome
• Make sure you are using the most recent version of Java
• Make sure you have added the website to the Java security exceptions site list

• Go to the "Configure Java" control panel 
• Go to the "Security" tab
• Copy/paste the following link into the "Exception Site List":   http://epsych.msstate.edu/
• Hit Apply/OK
• Close and relaunch your browser
• Access the Müller-Lyer Illusion study program: http://epsych.msstate.edu/descriptive/Vision/DepthValley/muller_ly/index.html
• Use screen captures (or paper and pencil) for recording your results.

Instructions:

Read all the instructions before beginning.

Open the site:  http://epsych.msstate.edu/descriptive/Vision/DepthValley/muller_ly/index.html

Once you access the site, read through the study instructions, play with the examples, do a practice run of the study and then run yourself in the Müller-Lyer illusion study.  You will need to capture your data as screen captures of the "Four Conditions Results" and the "More Detailed Results".  Also capture the information you will need for your report.  The bulk of the report contents is already provided on the website.  (You are both the participant and the investigator conducting a study.)

Document your work in a report using the full scientific paper format (found in module 2G) that includes:

• Abstract & keywords
• Background (literature search and your hypotheses, including the null hypothesis),
• Methods (variables; participants; materials; procedures),
• Results (both screen captures of the results; separate graphs of the results, e.g.,main and interactive effects and results details in a bar graph)
• Discussion that includes an interpretation of the findings
• Conclusions (address your hypotheses, provide your observations, and discuss an application of visual perception principals and theories). 
• References in APA format

In your report identify the independent, dependent and confounding variables.  Present the findings and assess your results.  Document main effects and interactions.  Identify an application of the illusion – what are the potential impacts in system design? 

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