On suppressing unwanted cues via randomization

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


In certain perceptual discrimination tasks, a change in a particular stimulus variable can be perceived as changes along multiple perceptual dimensions. If the study is primarily concerned with a particular perceptual dimension or cue, it is important that the experimenter keep the influences of the other unwanted but correlated perceptual cues under control. One way to accomplish this objective is to randomize the stimuli along the stimulus dimensions primarily associated with these unwanted cues, making them unreliable as a basis for the discrimination. This theoretical note presents a mathematical proof that a uniform randomization is the most effective way of suppressing unwanted cues.

Original languageEnglish (US)
Pages (from-to)1379-1382
Number of pages4
JournalPerception and Psychophysics
Issue number7
StatePublished - Oct 2008

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Sensory Systems
  • General Psychology


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