This is a demonstration of the essentials of an historically significant experiment in empirical psychology. Can you guess when this experiment was first developed and reported in the literature? Can you guess who developed it?

TO OBTAIN ANSWERS: In order to improve these pages, I am trying to obtain more information about why and how they are used by my visitors. If you would like to get the answers to the above questions as well as the answers to the 10 memory image tests below, please send me an email with the following information:

1. Reason you are using the site: (academic research, personal interest, professional research, course-related work, etc.)
2. If using site for research, academic level of your research: (high school, college or university)

Single words answers are fine. Feel free to elaborate, if you wish.

I will use the data about the interests of my visitors to improve these pages.

PERCEPTUAL UNITS AND MEMORY IMAGE TEST:

Step 1. Test your Internet connection and computer setup. Attend the center of the computer screen. The word "TEST" will be displayed VERY briefly on the screen. Click HERE to test setup. It may take you several tries to become used to seeing the word displayed briefly. The TEST display runs at the same speed as the items in STEP 2 of the experiment below.

If setup is OK, proceed to Step 2 below. Otherwise, right click HERE and choose Save Target As... to download zip file containing the test files. Unpack the zip files and run the test locally on your own computer. Open file x8.htm to start.

Step 2. Pay attention to the computer screen. Letters will be displayed briefly on the screen, as in the TEST display of STEP 1. Take all 10 tests below. Do each test only once. For each test write down the answers to the questions below. If you are unsure, write down your best guess.

a. How many letters were displayed?

b. What letters were displayed? List as many as you can.

Test 1   Click only once!
Test 2.
Test 3.
Test 4.
Test 5.
Test 6.
Test 7.
Test 8.
Test 9.
Test 10.


To obtain answers or request adjustments in speed of test contact me.

What does this test mean?.

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