Does the Color of Printed Shapes Affect Memory?

Researched by Breanna D.
2003-04


PURPOSE

The purpose of this experiment was to determine whether the color of printed shapes affected human memory.

I became interested in this idea when I started to realize more how much our everyday life depends on memory. My third grade teacher told us that we’d remember the information on the graphs we looked at better if they were in color. I wasn’t sure about that, so since then, I’ve been waiting to look further into the idea.

The information gained from this experiment would aid educators in teaching their students so they would remember information better. It would also aid people with poor memory in finding ways to remember things more effectively.
 
 
 
 

HYPOTHESIS

My hypothesis was that 6th graders would remember more shapes if they were originally shown to them in color rather than in black and white.

I based my hypothesis on what Jerrold E. Kemp and Don C. Smellie say in their book Planning, Producing, and Using Instructional Technologies. “Color incorporated into illustrations appears to enhance students’ achievement of learning objects. ” 

I also based my hypothesis on what David M. Moore and Francis M. Dwyer say in their book, Perceptual and Motor Skills. They state, “Color ‘coding’ helps learners organize or categorize information into useful patterns and structures in which to store new information. ” 

I also based my hypothesis on Aura Hanna and Roger Remington‘s book,  Memory and Cognition. Here they state, “We found that students recognize information more accurately when the stimulus is colored rather that in black and white. ” They also say they found that color improves accuracy of recall at the expense of speed.

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EXPERIMENT DESIGN

The constants in this study were:

  • Grade of subjects (6th)
  • Background color of test (white)
  • Time to study shapes (4 minutes)
  • Time to take test (8 minutes)
  • Location of experiment
  • Noise level (quiet classroom)
  • Time of day test taken (noon)
  • Number of subjects (20 in each experiment treatment)
  • Equal mix of gender
  • Testing procedures 
  • Time between study and test (30 minutes)
  • Treatment schedule


The manipulated variable was color of the shapes on the test.

The responding variable was the average test score subjects got on the test.  

To measure the responding variable I counted the number correct on the tests.
 
 
 
 
 

MATERIALS

QUANTITY ITEM DESCRIPTION

25 Tests with 30 shapes (include shapes from ‘List A’), 15 tests in color, 15 tests in black ink, all titled ‘Test A’
25 Tests with 30 shapes (include shapes from ‘List B’), 15 tests in color, 15 tests in black ink, all titled ‘Test B’
24 Lists of 15 shapes, 12 lists in color, 12 lists in black ink, all titled ‘List A’
24 Lists of 15 shapes, different from ‘List A,’12 lists in color, 12 lists in black ink, all titled ‘List B’
24 6th grade test subjects (approximately12 of each gender)
24 Desks with chairs
24 # 2 pencils
Class room without distractions
1 Experimenter’s script
1 stop wach
1 Test A with correct answers circled for correcting
1 Treatment schedule
1 Test B with correct answers circled for correcting

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PROCEDURES

A. Preparing the tests
1. Choose 15 shapes for the subjects to memorize.
2. Make every shape a bright color, but un-colorize the shapes before printing the last 12 copies.
3. Label this as “List A”. Print out 12 copies of this list in color, and 12 more in black ink.
4. Choose 15 different shapes to act as distracters. Make every shape a bright color.
5. Scramble the distracters randomly with the original shapes into one large group.
6. Label this as “Test A”. Print 25 copies of this test. One will become the experimenter’s correcting key, but the others are the actual memory test for subjects to take.
7. On the correcting key, circle all shapes from “List A”-- the original shapes, NOT the distracters.
8. Repeat steps 1-7 with the following changes:
a. All shapes must be new and different from those previously used
b. Both the List and Test are labeled “B” instead of “A”

B. Obtaining subjects
1. Distribute parent permission sheets to volunteers.  
2. From students who return signed parent permission forms, randomly select approximately 10 6th grade males, and approximately 10 6th grade females. These are the subjects.
3. Create a treatment schedule with 4 different groups, and two different days. The treatment schedule is enclosed in the appendix and on the following page.
4. Randomly arrange 6 subjects per group.  

C. Memorizing shapes
1. Gather the subjects in a certain group to the testing room. The test should begin around 8:00.
2. Read instructions and answer questions.
3. Hand out the copies of the correct list using the treatment schedule to determine which form (A or B) and which color is needed for this group.
4. Start a stopwatch for 3 1/2 minutes.
5. When the time is up, take the sheets from the subjects.
6. Dismiss the subjects.
7. Wait 30 minutes before gathering the same subjects again for the test.

D. Giving the test
1. Gather the same subjects to the same room.
2. Hand out the copies of the correct test using the treatment schedule to determine which form (A or B) and which color is needed for this group.
3. Start a stopwatch for 5 minutes. In that time, the subjects should circle all the shapes they remember being on the list they tried to memorize earlier in the day. If they circle more than 15, have them erase extras.
4. After 5 minutes, have students turn in the tests, finished or not.

E. Second treatment
1. Repeat procedure “C” except use correct form (A or B) and color for this group for Day 2.
2. Repeat procedure “D” except use correct form (A or B) and color for this group for Day 2.

F. Finishing up
1. Correct the tests by comparing them to the correcting copy.
2. Record scores on data sheet.
3. Average the scores for each separate group.

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RESULTS

The original purpose of this experiment was to determine whether the color of printed shapes affected human memory.

The results of the experiment were that the average score on the colored test was slightly greater than that of the black and white test. The average of the colored scores were 14. 1, while the average score for the black and white test was 14. 0. On the first day of the experimenting subjects had a better overall average than day two. The average of day 1 was 14. 3, while the average of day two was 13. 9. The results also showed that test B was slightly harder than test A. Test B’s average was 13. 8, but test A’s average was 14. 4.

See the table and graph below.
 
 

CONCLUSION

My hypothesis was that 6th graders would remember more shapes if they were originally shown to them in color rather than in black and white.

The results indicate that this hypothesis should be accepted, because the color group remembered more than the black and white test. However, the increase was so small that it shouldn’t be concluded that using color is the best way to memorize information.

Because of the results of this experiment, I have some interesting ideas for future experiments:

  • I wonder if the subjects read a short story with five or more colored words, if they would remember the words an hour later.
  • I also wonder if the subjects weren’t told that they were to memorize the stimulus, regardless of what it is, if the test scores would be as high.
  • I also wonder if I did the testing in a different location if the results would be so close to each other.
  • It would be interesting to test whether boy’s or girl’s memory were affected more by color.


If I were to conduct this project again, I would have more subjects, perhaps 36. I would also have twice as many shapes for them to memorize. The time before taking the test would be an hour instead of half an hour, and I would do the whole experiment a second time with different subjects. I would make sure that everyone would at least try to memorize the shapes.
 


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RESEARCH REPORT

Introduction

Humans have always had the basic need to learn, but finding a way to memorize information and to remember it the longest possible time has been a problem. Printing out information to be memorized in color might solve this problem area.

Memory

Limbic System
The Limbic system is the first memory system. This memory system can be found in, “the inner temporal lobes in the main Hippocampus and Amygdale,” states Lisa Yount in, Memory. The limbic system creates both long-term and short-term memory, and then the long-term memories are stored as implict or explict memories.

Short-term or Working Memory
Short-term or working memory is created in the limbic system. The maximum amount of items able to be in the short term memory is 9, but few people can handle 6. There is a time limit to how long the memories stay in short term, that being 20-30 seconds. If they remain any longer, they have passed on to long term memory.

Long-term Memory
Long-term memory starts out as short-term memory. Like short-term memory, these memories are created in the limbic system, but there is no limit to how long these stay memories. Some long-term memories can stick with a person for a lifetime. When these memories are made, they’re moved to the second memory system where they are stored as explict memories. The second memory system is where recall failure occurs. Explict memories are stored long-term memories from the limbic system. These memories are in the second memory system along with implict memories. Implict memories consist of memories that one is not conscious of, like sleeping. These are long-term memories that are more than likely to be remembered for a lifetime, the only reason for forgetting being a memory disorder.

Four Most Common Memory Disorders
There are 4 common memory disorders. These are Alzheimer’s disease, amnesia, tip of tongue, and flash bulb. Alzheimer’s disease is a brain disease that causes one to loose various mental abilities, memory included. Amnesia is when you loose the majority of your memory, but after some time, the memories are restored. Tip of tongue is a recall failure, when you know you have that memory but you can’t seem to remember it. The memory is always returned after it is needed. Flash bulb is when someone creates their own memory that seems real, but really isn’t.  

 Light

Light Color
Light has a number of colors. The visible range of light color from the spectrum can be seen on a rainbow, but light has even more colors in the ultraviolet range. Different flowers give off these colors to attract bees, but unless humans have special glasses, we can’t see them. The color of light is determined by its wavelengths.

Wavelengths
Light doesn’t travel in a straight line, but rather in waves. Wavelengths are simply a measurement of the space between the crests of two of these light waves. Wavelengths are measured in nanometers, or billionths of a meter. Visible colors are wavelengths of a curtain portion of the electro-magnetic spectrum. that appear as the colors on a rainbow from violet to red. Violet has the shortest wavelength of 410 nanometers, and red has the largest of 680 nanometers. Anything above 680 nanometers is infrared, which isn’t visible, and anything below 410 nanometers is ultraviolet, also invisible to humans.

Color

Difference Between Light and Color
Color is different than light in many ways. The more pigment colors you mix, the closer you get to black, but the more you mix light, the closer to white you get. Pigments absorb light color, reflecting all other light colors. The light that’s reflected is what we see the object as being. To illustrate, we see an object that reflects blue and green, we see it as teal, or any other type of blue-green, depending on the amount reflected. Light can be broken into its colored components by a prism or raindrops. This is why white sunlight forms a rainbow spectrum when tiny droplets of water vapor refract it.

How We See Color
The colors we see are light reflecting off of an object. Objects reflect unneeded light, usually its own, except most plants are blue or white, but to us, they’re green. This is because green light is the only light color that is of no use to the plants. The plant reflects the green light to our eyes. It enters through the pupil, where it reflects on the retina. Cells called the cones are sensitive to light and picks up the light from the image and carry it to the brain where the pattern is put back into the original object. If you’re in a dimly lighted room, then different cells called the rods that are very sensitive to light pick up shades and shadows.

Summary

Without memory, humans would not learn. Long-term and short-term memories are made in the Limbic system, and long-term memories are stored here. Explict and implict memories are stored in the second memory system with long-term memories. Without these memory systems, you can’t make or store memories. To see color, you need light. Light shines on an object and the object reflects and absorbs certain light colors. The color of the light being reflected is what we see the object as being.
 


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BIBLIOGRAPHY

“Color and Light,” 12/26/99 http://acept. asu. edu/PiN/rdg/color/color. shtml

Gummes S. , Glen. “The Use of Color in Teaching and Learning,” 4/2/98 http://www. strancis. edu/cid/colors/color1.htm

“Haldan K. Hartline. ” American Science Leaders. ABC-CLIO Interactive, 2001.  

Heston, Leonard L. “Alzheimer’s disease. ” The World Book Encyclopedia. 1995

“Light and Color,” 11/5/03 http://sln. fi. edu/color/color.html

Loftus, Elizabeth F. “Memory,” The World Book Encyclopedia. 2002

“Memory,” Webster’s New World Thesaurus. 1997.

Newfield Publications. Sight

“Photochemistry. ” The Columbia Encyclopedia. 2002

Roediger, Henry L. “Memory (Psychology),” ENCARTA Encyclopedia Deluxe. 2001.

Schultz, Ron Looking Inside the Brain US: John Muir Publications 1992 pp. 9,27-8

Treays, Rebecca Understanding Your Brain Chisholm, Jane pp. 14-8

Wyszecki, Gunter. “Color,” The World Book Encyclopedia. 1998.

Yount, Lisa. Memory. US: Lucent Books 1996 pp. 27-9, 31-2, 37
 

ACKNOWLEDGEMENTS

I would like to thank the following people for helping make my project possible:

  • My parents for allowing me to look up information at home and for the great patience they showed to me.
  • My teacher for helping me when I got stuck, and for helping me obtain my last subjects and helping me to get the experimenting done.
  • The teachers of the 6th grade classes I used in my experiment for the patience they showed when I experimented and prepared for the experiment.
  • My subjects for allowing me to use them in my experimenting, and for listening to instructions and following them.

 
 


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