Incongruence in number-luminance congruency effects.
Congruency tasks have provided support for an amodal magnitude system for magnitudes that have a "spatial" character, but conflicting results have been obtained for magnitudes that do not (e.g., luminance). In this study, we extricated the factors that underlie these number-luminance congruency effects and tested alternative explanations: (unsigned) luminance contrast and saliency. When luminance had to be compared under specific task conditions, we revealed, for the first time, a true influence of number on luminance judgments: Darker stimuli were consistently associated with numerically larger stimuli. However, when number had to be compared, luminance contrast, not luminance, influenced number judgments. Apparently, associations exist between number and luminance, as well as luminance contrast, of which the latter is probably stronger. Therefore, similar tasks, comprising exactly the same stimuli, can lead to distinct interference effects.
Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, The Netherlands. Titia.Gebuis@psy.kuleuven.be
Titia
T
Gebuis
Maarten J
MJ
van der Smagt
D000328:Adult; D001244:Association; D001288:Attention; D003220:Conflict, Psychological; D015350:Contrast Sensitivity; D004192:Discrimination, Psychological; D005260:Female; D006801:Humans; D007600:Judgment; D008297:Male; D008433:Mathematics; D011930:Reaction Time; D055815:Young Adult
Neuron. 2007 Jan 18;53(2):307-14
17224410
Trends Cogn Sci. 2003 Nov;7(11):483-8
14585444
Acta Psychol (Amst). 2006 Jul;122(3):221-33
16423320
Behav Brain Sci. 2009 Aug;32(3-4):313-28; discussion 328-73
19712504
Cereb Cortex. 2008 Feb;18(2):337-43
17556772
Neuropsychologia. 2010 Jan;48(2):394-401
19804788
J Cogn Neurosci. 2009 Apr;21(4):745-59
18578597
Neuron. 2004 Mar 25;41(6):983-93
15046729
J Cogn Neurosci. 2003 Jan 1;15(1):47-56
12590842
Psychon Bull Rev. 1994 Dec;1(4):476-90
24203555
Exp Psychol. 2006;53(2):87-94
16909932
Eur J Neurosci. 2009 Nov;30(10):1999-2008
19912334
Cognition. 1992 Aug;44(1-2):1-42
1511583
Neuron. 2007 Jan 18;53(2):293-305
17224409
Cognition. 2008 Jul;108(1):263-70
18313655
J Vis. 2007 Jul 06;7(10):2.1-5
17997671
Cogn Process. 2009 May;10(2):133-42
18607652
Mem Cognit. 1982 Jul;10(4):389-95
7132716
J Exp Psychol Gen. 2010 Feb;139(1):180-90
20121318
Cognition. 2006 Mar;99(2):113-29
15925355
Prog Neurobiol. 2008 Feb;84(2):132-47
18155348
Neuropsychologia. 2005;43(9):1238-48
15949508
Nat Neurosci. 2003 Jun;6(6):555-6
12754517
Psychol Rev. 1990 Apr;97(2):253-70
2186425
Mem Cognit. 1996 Sep;24(5):557-72
8870527
Mem Cognit. 2007 Apr;35(3):464-70
17691145
Behav Brain Funct. 2007 Jan 10;3:1
17214890
J Exp Psychol Learn Mem Cogn. 2002 Mar;28(2):259-74
11911383
Vision Res. 2001 Sep;41(20):2619-30
11520508
Cogn Neuropsychol. 2003 May 1;20(3):487-506
20957581
Neuropsychologia. 1998 Aug;36(8):731-5
9751438