Activity for the book My Psychology

My Take: 3.1 Difference Threshold

Instructions

View the My Take video and then answer the questions.

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      Question 1

      Which pioneers of psychophysics identified a law that states that the amount a stimulus must change before we can detect that change is proportional to the magnitude of the original stimulus?

      Question 2

      Mr. Samuelson asks his wife to turn up the television one night. Two minutes later he says, “I asked you to turn it up!” Mrs. Samuelson smiles to herself as she thinks, “I did turn it up,” and increases the volume some more. Which of the following statements is true of her initial change to the television volume?

      Question 3

      The difference threshold, also called the just noticeable difference, is the minimum change in a stimulus that is needed in order for that change to be detected % of the time.

      Question 4

      Your Take! Under what circumstances do you think that your difference threshold for a given stimulus would temporarily increase or decrease?