Recognition without awareness: an elusive phenomenon.
Two recent studies described conditions under which recognition memory performance appeared to be driven by nondeclarative memory. Specifically, participants successfully discriminated old images from highly similar new images even when no conscious memory for the images could be retrieved. Paradoxically, recognition performance was better when images were studied with divided attention than when images were studied with full attention. Furthermore, recognition performance was better when decisions were rated as guesses than when decisions were associated with low or high confidence. In three experiments, we adopted the paradigm used in the earlier studies in an attempt to repeat this intriguing work. Our attempts were unsuccessful. In all experiments, recognition was better when images were studied with full attention than when images were studied with divided attention. Recognition was also better when participants indicated high or low confidence in their decision than when they indicated that their decision was a guess. Thus, our results conformed to what typically has been reported in studies of recognition memory, and we were unable to demonstrate recognition without awareness. We encourage others to explore this paradigm, and to try to identify conditions under which the phenomenon might be demonstrated.
Jeneson
Annette
A
Department of Psychology, University of California, San Diego, California 92093, USA.
Kirwan
C Brock
CB
Squire
Larry R
LR
D001288:Attention / Q000502:physiology*; D001364:Awareness / Q000502:physiology*; D002755:Choice Behavior / Q000502:physiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009483:Neuropsychological Tests; D021641:Recognition, Psychology / Q000502:physiology*; D055815:Young Adult
Annu Rev Psychol. 1998;49:87-115
9496622
Cogn Affect Behav Neurosci. 2005 Mar;5(1):14-20
15913004
Neuron. 1998 Feb;20(2):185-95
9491981
Behav Neurosci. 1997 Dec;111(6):1163-70
9438786
Learn Mem. 2008 May 30;15(6):454-9
18519546
Science. 1990 Jan 19;247(4940):301-6
2296719
J Cogn Neurosci. 1997 Nov;9(6):699-713
23964593
Nat Neurosci. 2009 Mar;12(3):349-55
19198606
J Exp Psychol Learn Mem Cogn. 1991 Mar;17(2):210-23
1827829
Annu Rev Neurosci. 2004;27:279-306
15217334
Behav Neurosci. 2000 Jun;114(3):459-67
10883797
J Exp Psychol Gen. 1981 Sep;110(3):306-40
6457080
Neurobiol Learn Mem. 2004 Nov;82(3):171-7
15464402
Psychon Bull Rev. 2007 Oct;14(5):858-65
18087950