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"Do the Eyes Have It?"
Transcript of "Do the Eyes Have It?"
QUESTION / PROBLEM:
“Does the majority of my family have better visual memory (photographic memory) or auditory memory?”
• Index cards (to write number codes on)
• Online Random Number Generator
• Clipboard to hold data table
1. In this experiment, you need number sequences for people to remember. Each number sequence needs to be composed of the numbers 0-9 and be seven digits long. I first used an online random number generator to create 30 different random number sequences and wrote them on note cards with a giant sharpie marker. This deck of cards is to be used for the memory tests.
2. I then created a data table to be used to record results of each memory test. This chart has space to record the number of correct answers for each participant, for each type of memory test.
CONSTANTS & VARIABLE
• The number of digits for each memory test that is given is always 7.
• The number codes are always random.
• The amount of time given for the visual memory test stays the same for each participant (30 seconds).
• For the auditory memory test, the number of times to hear the number code stays the same for each participant (3 times).
• To check consistency, I waited 5 minutes and then asked each person if they remembered each number. The test is to show how many people had visual memory as their greater strength.
• The ages of the participants varied from ages 21 to age 54.
By: Chelsea Hall
“I predict that more of my family have better visual memory than they do auditory memory.”
3. Test the research participants: Find participants and ask if they would be willing to take 2 simple memory tests. Then give them the two tests below:
a. To test someone's visual memory, show them a card for 30 seconds and time them with a timer. Take back the card and have them recite the alphabet. Then ask them to tell you what the numbers were. Write down how many numbers they got right. This will be their score.
b. To test someone's auditory memory, read them the sequence of numbers on a different card three times slowly. After you read them the numbers, have them recite the alphabet. Then ask them to tell you what the numbers were. Write down how many numbers they got right. This will be their score.
c. If these 2 procedures prove to be inconclusive or are not difficult enough to make a distinction between the two memory stores, make appropriate adjustments to the testing procedure, such as adding in a few more digits to the number code, giving them a smaller amount of time to memorize it, and/or taking a longer period of time in-between their recitation of the number code.
4. After running the tests on all of the participants, count up the total number of people who got each score on the test and make a frequency table.
5. Calculate the percentage of people who received each score. In order to do this, first add the total number of participants for each column, then divide the number of people receiving the score by the total number of participants in the study. Multiply the answer by 100 to get the percentage.
6. In order to analyze the data, it is a good idea to make a histogram or pie chart. On the left side of the graph (Y-axis), write a scale for the percentage of people from 0 to 100%. On the bottom of the graph, write a scale for the number of correct responses from 0 to 7. Then using two colors, one for each type of memory, draw your results on the graph.
ANALYSIS OF RESULTS:
2nd Test Analysis
Rather than explicitly showing which memory store is greater, visual or auditory, the first test conducted simply shows that each memory store functions at a high capacity for each family member. Because I noticed early on in the testing that my family members were correctly reciting all the digits for each memory test, I followed part c. of the procedure guidelines and made adjustments. I began to wait a little while after the test (5 minutes), after the family member had moved on to doing something else, and then ask if they could still remember their numbers. This proved to be a more informative This was an adjustment that I made to my original procedure plan.
Final Analysis of Results
"After conducting the two visual and auditory memory tests, I have seen that test one was not informative enough, but that test two was sufficient. Judging from the information yielded in Test 2, I have concluded that more of my family has better visual memory (photographic memory) than has better auditory memory."
1st Test Analysis