Abstract
A prime even if backward masked can affect the reaction to a subsequently presented target. According to the object-updating hypothesis, negative CE (i.e. longer reactions in the compatible than incompatible trials) occurs due to the interaction between prime and a subsequent stimulus (usually a mask or flanker). Its crucial assumption is that only new elements of the mask can affect the response. As the masks are usually composed of figures that call for both possible responses, the masks’ new element calls for a response opposite to that initialized by the prime. Here an experiment is described in which the prime and target were two arrowheads pointing to left or right. Two different flankers were composed from the two heads pointing to the opposite directions. In contrast to the OU hypothesis, NCEs were different for the two flankers. This finding contradicts the OU hypothesis.
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Notes
One can argue that the OU hypothesis relies merely or primarily on similarity of elements or constituents comprising a configuration rather than on similarity of the (resultant) configuration. It should be, however, noted that in the present experiment, the compatibility effect should be identical for both stimuli, independently of whether the configurations or their elements matter. This is because both the novel configuration and the novel elements are identical for both flankers. Therefore, regardless of whether novel configuration or novel elements drive the participants’ response, the flanker effect should be identical.
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The author is grateful to Dr. Blandyna Skalska and Ewelina Trzcińska for their help in data collection.
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Jaśkowski, P. Negative compatibility effect: the object-updating hypothesis revisited. Exp Brain Res 193, 157–160 (2009). https://doi.org/10.1007/s00221-008-1700-6
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DOI: https://doi.org/10.1007/s00221-008-1700-6