A size illusion of the letter 'P'.

Abstract:

:The perceived size of 'P' and 'p' is influenced by their vertical position relative to nearby letters. In the experiments reported here, we show that uppercase 'P' appears smallest when it is displaced downward toward the letter's lowercase position, whereas lowercase 'p' appears largest when it is near the uppercase position. Our results show that this P-illusion not only occurs in the presence of nearby letters, but is also found when 'P' is displaced relative to a nearby horizontal line. This type of size illusion seems to clearly occur only with 'P' and 'p', and we suggest that it is a result of learning to read and recognize letters in the English alphabet.

journal_name

Vision Res

journal_title

Vision research

authors

Katz M,Pola J

doi

10.1016/s0042-6989(99)00192-3

subject

Has Abstract

pub_date

2000-01-01 00:00:00

pages

401-7

issue

4

eissn

0042-6989

issn

1878-5646

pii

S0042-6989(99)00192-3

journal_volume

40

pub_type

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