# Lab 3 Worksheet.pdf - Nicolette Khalifian Fall 2018 Lab 3 –...

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Nicolette KhalifianFall 2018Lab 3 – WorksheetToday we are going to measure the size of your illusion using the method of constant stimuli. Inthis method, we are going to keep the length of the reference line constant (i.e., the line on theleft will always be 160 pixels). On each trial you will see different lengths of the line on theright, and you need to decide whether the line on the right appears longer or shorter than thereference line.1. In the online experiment you viewed 13 different line lengths. Each line length wasviewed 4 times. At the end of the experiment, the computer displayed the mean % of thetime you said “longer” for each of the line length. Copy those means into the chart below.LineLength(dpi)Mean % of thetime you saidLonger15001550160016501700175251805018550190751951002007520575210100
2. Create a graph to calculate the size of your illusion (you can do this by hand or by usingthe excel/google spreadsheets template). Please paste your graph below.

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Term
Spring
Professor
Zaidel
Tags
Height, Top down and bottom up design, Archery, Bow