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Opposite haptic and visual induction effects observed with Titchener's ⊥

Identifieur interne : 000862 ( PascalFrancis/Corpus ); précédent : 000861; suivant : 000863

Opposite haptic and visual induction effects observed with Titchener's ⊥

Auteurs : Klaus Landwehr

Source :

Attention, perception & psychophysics [ 1943-3921 ] ; 2009.

RBID : Francis:09-0356454

Descripteurs français

Pascal (Inist)
- Sensibilité tactile, Vision, Etude expérimentale, Préhension, Illusion visuelle, Homme.

English descriptors

KwdEn :
- Experimental study, Gripping, Human, Optical illusion, Tactile sensitivity, Vision.

Abstract

Nineteen psychology undergraduates were requested to "grasp" the lines of a computer image of Titchener's ⊥ with a thumb and index finger pincer grip immediately after the line to be grasped had been indicated and the whole figure extinguished. The hand remained visible. Lines were of three different lengths (6.5, 7, and 7.5 cm), and ⊥s were presented at eight different orientations (rotated in steps of 45°). Lines also had to be judged longer, shorter, or equal, relative to one another. Haptically, subjects responded correctly to the ⊥s' undivided lines, but scaled their responses to the divided ones according to the undivided ones. Categorical judgments yielded comparable psychometric functions for both kinds of lines, with a significant shift of points of subjective equality from a difference in length between lines of 9.8% to 13.5% when the divided or the undivided line was target. Haptic sensitivity, therefore, appears to be constrained by context, whereas the classical "visual illusion," associated with Titchener's ⊥, may be regarded a mere decisional criterion shift.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A03		`1`		`@0 Atten. percept. psychophys.`
A05				`@2 71`
A06				`@2 5`
A08	`01`	`1`	`ENG`	`@1 Opposite haptic and visual induction effects observed with Titchener's ⊥`
A11	`01`	`1`		`@1 LANDWEHR (Klaus)`
A14	`01`			`@1 Ernst-Moritz-Arndt-Universität Greifswald @2 Greifswald @3 DEU @Z 1 aut.`
A20				`@1 1197-1202`
A21				`@1 2009`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 14257 @5 354000187483440170`
A44				`@0 0000 @1 © 2009 INIST-CNRS. All rights reserved.`
A45				`@0 1 p.1/4`
A47	`01`	`1`		`@0 09-0356454`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Attention, perception & psychophysics`
A66	`01`			`@0 USA`
A99				`@0 6 notes`
C01	`01`		`ENG`	@0 Nineteen psychology undergraduates were requested to "grasp" the lines of a computer image of Titchener's ⊥ with a thumb and index finger pincer grip immediately after the line to be grasped had been indicated and the whole figure extinguished. The hand remained visible. Lines were of three different lengths (6.5, 7, and 7.5 cm), and ⊥s were presented at eight different orientations (rotated in steps of 45°). Lines also had to be judged longer, shorter, or equal, relative to one another. Haptically, subjects responded correctly to the ⊥s' undivided lines, but scaled their responses to the divided ones according to the undivided ones. Categorical judgments yielded comparable psychometric functions for both kinds of lines, with a significant shift of points of subjective equality from a difference in length between lines of 9.8% to 13.5% when the divided or the undivided line was target. Haptic sensitivity, therefore, appears to be constrained by context, whereas the classical "visual illusion," associated with Titchener's ⊥, may be regarded a mere decisional criterion shift.
C02	`01`	`X`		`@0 770B05E @1 II`
C02	`02`	`X`		`@0 770B05C @1 II`
C03	`01`	`X`	`FRE`	`@0 Sensibilité tactile @5 01`
C03	`01`	`X`	`ENG`	`@0 Tactile sensitivity @5 01`
C03	`01`	`X`	`SPA`	`@0 Sensibilidad tactil @5 01`
C03	`02`	`X`	`FRE`	`@0 Vision @5 02`
C03	`02`	`X`	`ENG`	`@0 Vision @5 02`
C03	`02`	`X`	`SPA`	`@0 Visión @5 02`
C03	`03`	`X`	`FRE`	`@0 Etude expérimentale @5 04`
C03	`03`	`X`	`ENG`	`@0 Experimental study @5 04`
C03	`03`	`X`	`SPA`	`@0 Estudio experimental @5 04`
C03	`04`	`X`	`FRE`	`@0 Préhension @5 05`
C03	`04`	`X`	`ENG`	`@0 Gripping @5 05`
C03	`04`	`X`	`SPA`	`@0 Prension @5 05`
C03	`05`	`X`	`FRE`	`@0 Illusion visuelle @5 06`
C03	`05`	`X`	`ENG`	`@0 Optical illusion @5 06`
C03	`05`	`X`	`SPA`	`@0 Ilusión visual @5 06`
C03	`06`	`X`	`FRE`	`@0 Homme @5 18`
C03	`06`	`X`	`ENG`	`@0 Human @5 18`
C03	`06`	`X`	`SPA`	`@0 Hombre @5 18`
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C07	`01`	`X`	`ENG`	`@0 Perception @5 37`
C07	`01`	`X`	`SPA`	`@0 Percepción @5 37`
C07	`02`	`X`	`FRE`	`@0 Motricité @5 38`
C07	`02`	`X`	`ENG`	`@0 Motricity @5 38`
C07	`02`	`X`	`SPA`	`@0 Motricidad @5 38`
N21				`@1 257`

Format Inist (serveur)

NO :	FRANCIS 09-0356454 INIST
ET :	Opposite haptic and visual induction effects observed with Titchener's ⊥
AU :	LANDWEHR (Klaus)
AF :	Ernst-Moritz-Arndt-Universität Greifswald/Greifswald/Allemagne (1 aut.)
DT :	Publication en série; Niveau analytique
SO :	Attention, perception & psychophysics; ISSN 1943-3921; Etats-Unis; Da. 2009; Vol. 71; No. 5; Pp. 1197-1202; Bibl. 1 p.1/4
LA :	Anglais
EA :	Nineteen psychology undergraduates were requested to "grasp" the lines of a computer image of Titchener's ⊥ with a thumb and index finger pincer grip immediately after the line to be grasped had been indicated and the whole figure extinguished. The hand remained visible. Lines were of three different lengths (6.5, 7, and 7.5 cm), and ⊥s were presented at eight different orientations (rotated in steps of 45°). Lines also had to be judged longer, shorter, or equal, relative to one another. Haptically, subjects responded correctly to the ⊥s' undivided lines, but scaled their responses to the divided ones according to the undivided ones. Categorical judgments yielded comparable psychometric functions for both kinds of lines, with a significant shift of points of subjective equality from a difference in length between lines of 9.8% to 13.5% when the divided or the undivided line was target. Haptic sensitivity, therefore, appears to be constrained by context, whereas the classical "visual illusion," associated with Titchener's ⊥, may be regarded a mere decisional criterion shift.
CC :	770B05E; 770B05C
FD :	Sensibilité tactile; Vision; Etude expérimentale; Préhension; Illusion visuelle; Homme
FG :	Perception; Motricité
ED :	Tactile sensitivity; Vision; Experimental study; Gripping; Optical illusion; Human
EG :	Perception; Motricity
SD :	Sensibilidad tactil; Visión; Estudio experimental; Prension; Ilusión visual; Hombre
LO :	INIST-14257.354000187483440170
ID :	09-0356454

Links to Exploration step

Francis:09-0356454

Le document en format XML

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<front><div type="abstract" xml:lang="en">Nineteen psychology undergraduates were requested to "grasp" the lines of a computer image of Titchener's ⊥ with a thumb and index finger pincer grip immediately after the line to be grasped had been indicated and the whole figure extinguished. The hand remained visible. Lines were of three different lengths (6.5, 7, and 7.5 cm), and ⊥s were presented at eight different orientations (rotated in steps of 45°). Lines also had to be judged longer, shorter, or equal, relative to one another. Haptically, subjects responded correctly to the ⊥s' undivided lines, but scaled their responses to the divided ones according to the undivided ones. Categorical judgments yielded comparable psychometric functions for both kinds of lines, with a significant shift of points of subjective equality from a difference in length between lines of 9.8% to 13.5% when the divided or the undivided line was target. Haptic sensitivity, therefore, appears to be constrained by context, whereas the classical "visual illusion," associated with Titchener's ⊥, may be regarded a mere decisional criterion shift.</div>
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Opposite haptic and visual induction effects observed with Titchener's ⊥

Opposite haptic and visual induction effects observed with Titchener's ⊥

Source :

Descripteurs français

English descriptors

Abstract

Notice en format standard (ISO 2709)

Format Inist (serveur)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri