Investigating Reaction Time

• What is reaction time?

  How quickly you respond to stimuli
• Why is reaction time often less than a second?

  It measures quick responses to stimuli
• What factors can affect reaction time?

  Age, gender, or drugs can affect it
• How can you measure reaction time?

  Using a ruler or a stopwatch
• What is caffeine's effect on reaction time?

  Caffeine can speed up reaction time
• How is reaction time measured using a ruler?

  By catching the ruler as it falls
• What are the steps to measure reaction time with a ruler?

  1. Sit with arm resting on a table.
  2. Hold a ruler vertically between thumb and finger.
  3. Release the ruler without warning.
  4. Catch the ruler as quickly as possible.
  5. Measure the distance fallen to calculate reaction time.
• What should the person being tested do during the reaction time test?

  They should sit with their arm resting
• Why should the ruler be held vertically?

  To ensure a fair and accurate drop
• What happens if the person moves their arm during the test?

  It can affect the accuracy of results
• How should the ruler be positioned before dropping?

  Zero end should be level with thumb
• What should be done after catching the ruler?

  Read the number where it was caught
• How does the distance fallen relate to reaction time?

  Longer distance means slower reaction time
• What should be done if the test is repeated multiple times?

  Calculate the mean of the results
• What should the person being tested avoid before the test?

  Avoid consuming caffeine or stimulants
• Why is it important to control variables in the test?

  To ensure a fair and valid test
• What is the effect of too much caffeine on reaction time?

  It can cause unpleasant side effects
• What should be done to ensure the test is fair?

  Use the same person to catch each time
• What should the height of the ruler be when dropped?

  It should be the same height each time
• What is the significance of the mean reaction time?

  It provides an average measure of performance
• How does the number caught on the ruler relate to reaction time?

  Higher numbers indicate slower reaction times
• What should be done if the person has consumed caffeine?

  They should not participate in the test
• Why is it important to avoid caffeine before testing?

  It can skew the results of the test
• What is the consequence of not controlling variables?

  Results may be unreliable and invalid
• What is the final step after conducting the test?

  Analyze the results and draw conclusions
• What should be done if the results vary significantly?

  Re-evaluate the testing conditions
• How can too much caffeine affect the test outcome?

  It can lead to inconsistent reaction times
• What should not be consumed before the start of the experiment?

  Caffeine
• Why should caffeine be avoided before the experiment?

  It may affect the reaction time
• What can too much caffeine cause during testing?

  Unpleasant side effects
• What should a person being tested avoid after the experiment?

  Drinking more caffeine
• How can reaction time be measured?

  Using a computer
• What is one method to measure reaction time using a computer?

  Clicking the mouse when a stimulus appears
• How do computers improve the measurement of reaction time?

  They reduce human error in measurements
• In what unit can reaction time be recorded?

  Milliseconds
• What can a computer provide in terms of reaction time measurement?

  A more precise measurement
• What can a computer record during the reaction time test?

  The exact reaction time
• How can a computer help predict responses during a test?

  By learning from previous responses
• What can students investigate regarding energy drinks and reaction time?

  The effect of energy drinks on reaction time
• How many times did each student repeat the test?

  Five times