1. “Global perception and personality type”;Schiller;Z. Psychol.,1942
2. In order to checkthesedifferencesby parametricstatisticsthe averagelengthof the “arrow feather” segment judged equal to the “arrow head” segment was found. In other words, the Point of Subjective Equality (P.S.E.) was calculated for each subject. The results obtained by analysis of variance were similar to those found by the previous method. However, in view of a lack of homogeneity of variance non-parametric statistics were considered more applicable to the data.
3. The Müller-Lyer illusion in the ring dove, Turtur risorius.
4. Weckowicz T. E. , and Blewett D. B. , “Size Constancy and Abstract Thinking in Schizophrenic Patients”, J. Ment. Sci. (in press).
5. Müller-Lyer F. C. , “Optische Urtheilstauschungen”, Arch. Physiol., Suppl. Bd., 1889, 262–270.