Answers are grounded in this paper and cite their sources.
The horizontal‐vertical illusion, in which a vertical dimension is overestimated relative to a horizontal one, is usually described in terms of either an L figure or an inverted T (⊥), and as such has been extensively investigated. It is usually claimed (e.g. Robinson, 1972) ‘that a plain square is too stable a configuration perceptually to suffer from the vertical‐horizontal illusion However, the present author has been unable to find any reference to support this assertion, and it has therefore been tested experimentally.
No takes yet. Share an insight, caveat, or question.
I. C. McManus (1978) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: