Relation of the frame in a portable rod-and-frame apparatus to judgements of perceived verticality

Percept Mot Skills. 1977 Feb;44(1):44-6. doi: 10.2466/pms.1977.44.1.44.

Abstract

To assess the effect of the frame on the mean error in the portable rod-and-frame 18 subjects were tested once with frame present and once without it. 11 frame-dependent subjects produced smaller mean error without the frame; 7 frame-independent subjects were not significantly affected by removal of the frame. Nyborg's statistical method of differentiating frame-dependent and frame-independent subjects appears validated.

MeSH terms

  • Attention
  • Cues*
  • Field Dependence-Independence*
  • Humans
  • Orientation*