The Domains of Psychophysics
absolute threshold: boundary between detectable and undetectable
Example: How loud does your cell phone ring have to be for you to hear it in a quiet room?
- just noticeable difference (JND): minimum amount by which a stimulus must be changed to produce a noticable difference
- Example: How different in pitch (high vs. low tones) does your cell phone have to be from your friend’s phone in order for you to tell the difference?