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- Title
Titchener's ⊥ in context 1-delimited, discrete monomotif patterns, line arrangements, and branching patterns.
- Authors
Landwehr, Klaus
- Abstract
Three experiments tested the effects of the presence of nontarget ⊥s on Titchener's () ⊥-illusion. Experiment 1 used patterns of four separate ⊥s, Experiment 2 used branching patterns in which four ⊥s were stuck together, and Experiment 3 used patterns of four triangles or four beehive forms for which the ⊥ could be seen as a skeleton. Three independent samples of 12 observers each had to haptically indicate the lengths of target lines and verbally judge the relative lengths of the two lines of target ⊥s. The illusion to judge or indicate the ⊥'s undivided line as longer than its divided line survived throughout except for the branching patterns: here, haptic indications did not differ between the two types of lines. Specific features of these patterns and of the ⊥ itself may be responsible for these effects.
- Subjects
EXPERIMENTAL psychology; OPTICAL illusions; PATTERN perception; BEEHIVES; VISUAL perception
- Publication
Attention, Perception & Psychophysics, 2016, Vol 78, Issue 1, p278
- ISSN
1943-3921
- Publication type
Article
- DOI
10.3758/s13414-015-0996-0