Human perception and behavior

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  Hearing: Frequency and Volume

  Test your hearing range by listening to low-, medium-, and high-frequency sounds. Compare the relative loudness of sounds at each frequency … to create an equal-loudness curve. In a quiet room, measure your threshold of audibility for each frequency, and compare your results to others. The volume of each sound can be adjusted.

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  Real-Time Histogram

  Try to click your mouse once every 2 seconds. The time interval between each click is recorded, as well as the error and percent error. … Data can be displayed in a table, histogram, or scatter plot. Observe and measure the characteristics of the resulting distribution when large amounts of data are collected.

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  Reverse the Field

  Measure the time required to write a word when the mouse behaves in a normal fashion and when the direction of motion is reversed from left … to right, up to down, or both. Run several experiments in each mode to see if your brain and muscles are able to adapt to the new direction of motion. Determine which type of inversion is easiest to adjust to and whether you can train yourself to function normally when the inversion is present.

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  Sight vs. Sound Reactions

  Measure your reaction time by clicking your mouse as quickly as possible when visual or auditory stimuli are presented. The … individual response times are recorded, as well as the mean and standard deviation for each test. A histogram of data shows overall trends in sight and sound response times. The type of test as well as the symbols and sounds used are chosen by the user.

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  Time Estimation

  Try to estimate the passage of time by selecting a time interval, clicking the Start button, and clicking Stop when you think the interval … has passed. The estimate and percent error are recorded. Compare different techniques for estimating time, as well as the average error for long time intervals versus shorter intervals.

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