Psychophysical Methods for Measuring Difference Thresholds

Inquisit Test Variants

Method of Adjustment

This script demonstrates Fechner's Method of Adjustment for detection psychophysical difference thresholds.

(Requires Inquisit Lab to run on your computer)

Run Test Online
(See how the test runs with Inquisit Web)

User Manual

Sample Data

Last Updated: Sep 12, 2017, 5:33PM

Method of Constant Stimuli

This script demonstrates Fechner's Method of Constant Stimuli for detection psychophysical difference thresholds.

(Requires Inquisit Lab to run on your computer)

Run Test Online
(See how the test runs with Inquisit Web)

User Manual

Sample Data

Last Updated: Sep 12, 2017, 5:33PM

Method of Limits

This script demonstrates Fechner's Method of Limits for detection psychophysical difference thresholds.

(Requires Inquisit Lab to run on your computer)

Run Test Online
(See how the test runs with Inquisit Web)

User Manual

Sample Data

Last Updated: Sep 12, 2017, 5:33PM

Staircase Method

This script demonstrates von Békésy's Staircase Method for detection psychophysical difference thresholds.

(Requires Inquisit Lab to run on your computer)

Run Test Online
(See how the test runs with Inquisit Web)

User Manual

Sample Data

Last Updated: Sep 12, 2017, 5:33PM

References

Fechner GT (1860/1966) Elemente der Psychophysik. Breitkopf & Härtel, Leipzig (reprinted in 1964 by Bonset, Amsterdam); English translation by HE Adler (1966): Elements of psychophysics. Holt, Rinehart & Winston, New York.

Békésy G von (1947) A new audiometer. Acta Otolaryngol 35: 411–422

Blackwell HR (1952) Studies of psychophysical methods for measuring visual thresholds. J Opt Soc Amer 42: 624–643