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Junko Matsukawa

Publications and source records attributed to Junko Matsukawa.

2 recordsLinked to original sources

Conceptual versus perceptual priming in incomplete picture identification.

This paper examined conceptual versus perceptual priming in identification of incomplete pictures by using a short-term priming paradigm, in which information that may be useful in identifying a fragmented target is presented just prior to the target's presentation. The target was a picture that slowly and continuously became complete and the participants were required to press a key as soon as they knew what it was. Each target was preceded by a visual prime. The nature of this prime varied from very conceptual (e.g., the name of the picture's category) to very perceptual (e.g., a similar-shaped pictorial prime from a different category). Primes also included those that combined perceptual and conceptual information (e.g., names or images of the target picture). Across three experiments, conceptual primes were effective while the purely perceptual primes were not. Accordingly, we conclude that pictures in this type of task are identified primarily by conceptual processing, with perceptual processing contributing relatively little.

Humans↗

[The contextual effect in object detection from picture].

Participants detected a target from search stimuli which contained either eight (Experiment 1) or four (Experiment 2) living or nonliving common objects. Objects were represented either as pictures or as words. The target and other stimuli were from a same category, either living or nonliving, in the congruent condition, and were from a different category in the incongruent condition. The results of Experiment 1 showed that picture targets were detected more quickly in the incongruent than in the congruent condition while word targets were detected more quickly in the congruent than in the incongruent condition. These results indicate an interference effect of visual context in picture detection and a facilitation effect of semantic context in word detection. However, Experiment 2 using four stimuli did not show the same contextual effects as Experiment 1, probably because the task became easy.

Adult↗