Unconscious word stem completion priming in a mirror-masking paradigm

Perrig, Walter J.; Eckstein, Doris (2005). Unconscious word stem completion priming in a mirror-masking paradigm. Consciousness and cognition, 14(2), pp. 257-277. Elsevier 10.1016/j.concog.2004.07.008

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The aim of this study was to investigate unconscious priming by the use of a spatial mirror-masking paradigm. Words and nonwords with no under-length letters are mirrored at their horizontal axis. The results are figures of geometric-like forms that contain letters in their upper part. In the three experiments reported in this study, a priming procedure used such mirrored words and nonwords as primes. Participants were ignorant of the nature of the construction of the stimuli. Perceptual reports of the participants revealed that they did not realize that words were hidden in the primes. Nevertheless, they showed priming in all three experiments. Priming effects were replicated with prime–target SOAs of between 1 and 3 s. Functional dissociations were found between ignorant and informed participants. Informed groups showed perceptual and semantic priming, while ignorant groups showed only perceptual priming.

Item Type:

Journal Article (Original Article)


07 Faculty of Human Sciences > Institute of Psychology > Psychological and Behavioral Health

UniBE Contributor:

Perrig, Walter


100 Philosophy > 150 Psychology
600 Technology > 610 Medicine & health








Anna Maria Ruprecht Künzli

Date Deposited:

14 Aug 2014 11:29

Last Modified:

05 Dec 2022 14:34

Publisher DOI:




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