Abstract

Learning the methods of psychophysics is an essential part of training for perceptual experimentation, and hands-on experience is vital, but gaining this experience is difficult because good tools for learning are not available. The FechDeck is an ordinary deck of playing cards that has been modified to support learning the methods of psychophysics. Card backs are printed with noise patterns that span a range of densities. Faces are augmented with line segments arranged in “L” patterns. Jokers are printed with ruled faces and with backs that serve as standards. Instructions provided with the FechDeck allow users to perform threshold experiments using Fechner's methods of adjustment, limits, and constant stimuli; scaling experiments using Thurstone's ranking, paired comparison, and successive categories methods; and Stevens's magnitude estimation method. Spreadsheets provided with the deck support easy data entry and meaningful data analysis. An online repository supporting the FechDeck has been established to facilitate dissemination and to encourage open source development of the deck.

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