Accuracy of reproducing angles

Is a right angle special?

Robert Gray, David Regan

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The ability to set the angle of a 'V' to a designated value in the following three conditions was compared: (1) verbal designation of V angle; (2) initial 30 s visual demonstration of the designated V angle; (3) verbal designation of V angle plus feedback after every setting. The designated angles were 90° and 45° plus three arbitrary angles (65°, 125°, and 145°). Each run comprised thirty consecutive settings. To ensure that our observers based their settings entirely on V angle it was arranged that line orientation did not provide a reliable cue to V angle. In condition (1), accuracy of setting V angle was significantly worse when the designated angle was other than 90° or 45°. This was not the case in condition (2), indicating that observers maintained a memory of the initial demonstration throughout a run of thirty settings. Setting error was not significant in condition (3) for any of the five angles. However, even in condition (3), setting-to-setting variability was significantly lower for the 90° angle than for the other angles.

Original languageEnglish (US)
Pages (from-to)531-542
Number of pages12
JournalPerception
Volume25
Issue number5
StatePublished - 1996
Externally publishedYes

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Aptitude
Cues
Demonstrations
Feedback
Data storage equipment

ASJC Scopus subject areas

  • Psychology(all)
  • Experimental and Cognitive Psychology

Cite this

Accuracy of reproducing angles : Is a right angle special? / Gray, Robert; Regan, David.

In: Perception, Vol. 25, No. 5, 1996, p. 531-542.

Research output: Contribution to journalArticle

Gray, R & Regan, D 1996, 'Accuracy of reproducing angles: Is a right angle special?', Perception, vol. 25, no. 5, pp. 531-542.
Gray, Robert ; Regan, David. / Accuracy of reproducing angles : Is a right angle special?. In: Perception. 1996 ; Vol. 25, No. 5. pp. 531-542.
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