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By Wesley Mauk Bellwood-Antis School District Grade 9 Problem Does chewing gum improve memory? Reason for testing The act of chewing gum stimulates your brain cells. Others believe the act of chewing gum increases your heart rate and also increases your blood flow. Sylvia Hubbard UK psychologists MSN Health Hypothesis Chewing gum does improve memory. Procedure-Preparing room 1. Place 10 test subjects in a nondistracting room. Inform subjects that they are not allowed to communicate. 2. Handout 1 sheet of paper with the 50 digit number sequence to each subject. Hand out blank paper, pencils. 3. Make sure each subject is seated the same and the temperature is 22° C. Procedure-Preparing subjects 4. Handout 1 stick of gum to each subject. 5. Have each subject start to chew gum and start timer. 6. Allow 5 minutes for each subject to chew gum and memorize the number sequence. 7. After 5 minutes, stop timer and flip over the paper with the number sequence on them so they are not visible. Procedure-Testing subjects 8. Allow subjects 2 minutes (use timer) to copy down as much of the number sequence as they can from memory. 9. Collect all materials. 10. Repeat stops 3-10, only without the subjects chewing gum and with a NEW number sequence. This is my control group! Procedure-Testing the subjects 8. Allow subjects 2 minutes (use timer) to copy down as much of the number sequence as they can from memory. 9. Collect all materials. 10. Repeat stops 3-10, only without the subjects chewing gum and with a new number sequence. This is my control group! Procedure-Scoring the test Go through each list and compare the numbers written down to the numbers actually on the list. 12. Write the total number of numbers memorized on the top of the sheet. 11. Experimental Design Experimental Variable: Subjects chewing gum while memorizing. Experimental groups: Subjects chewing gum while memorizing, subjects not chewing gum while memorizing. Control group: Subjects not chewing gum. Control Variables Gum Type of Gum Amount of gum (1 stick) Flavor of gum People Seating position Time given to memorize Subjects are not allowed to communicate Number sequence Room Lighting Day Time given to memorize Non-distracting test room Temperature Time of day # of numbers remembered Sub. 1 Sub. 2 Sub. 3 Sub. 4 Sub. 5 Sub.6 Sub.7 Sub.8 Sub. 9 Sub. 10 28 32 13 7 8 23 10 4 23 17 8 21 14 7 7 12 10 8 12 14 KEY Top row: With Gum Bottom row: Without Gum Number of numbers memorized Results (Graph) 35 30 25 20 15 10 5 0 28 32 13 7 8 23 10 4 23 17 8 21 14 7 7 12 10 8 12 14 With Without Sub. 1 Sub. 6 Sub. 2 Sub. 7 Sub. 3 Sub. 8 Sub. 4 Sub. 9 Sub. 5 Sub. 10 Averages Averages Number of numbers memorized 30 25 20 15 10 5 0 With gum Without gum Conclusion As you can see, chewing gum while studying tends to increase memory in 70% of the people. Further Study More people Words Longer numbers pictures