Representation and retrieval of two-digit numbers in mental comparison

Bibliographic Data

ID19277700
AuthorsYukio Itsukushima (Nihon University), JYUNKO TOZAWA (Kawamura Gakuen Women's University), FUMIHIKO ITAGAKI (Nihon University)
Year1990
Volume32
Issue3
Pages117-127
Publication date1990-01-01
Open AccessNo
TypeARTICLE
VenueJapanese Psychological Research (JOURNAL)
Journal identifiersISSN: 0021-5368 • E-ISSN: 1468-5884
PublisherThe Japanese Psychological Association (PUBLISHER • JP)
DOI10.4992/psycholres1954.32.117
OpenAlexW226063916
LanguageEN
Citations received1
References cited1

Subjects were asked to judge whether two-digit numbers randomly selected from 11 to 39 were smaller or larger than a standard number of 25, and also whether two-digit numbers from 61 to 89 were smaller or larger than another standard number of 75. In both tasks, significant Symbolic Distance Effects (SDEs) were observed in those decades which contained the standards numbers. In other decades, however, reaction times (RTs) were constant regardless the distance between the digits and the standard. These findings might be regarded as “Categorization Effect”(Maki, 1981). Furthermore, the RTs for “75” were consistently slower than for “25”. These results were interpreted as to reflect the compression of the representation of numbers in memory, characterizing an example of the “Number Compression Effect.” To explain the findings, a two-stage processing model is proposed

Arithmetic · Categorization · Cognition · Constant (computer programming) · Mental representation · Numerical digit · Representation (politics) · Statistics · Artificial Intelligence · Cognitive and developmental aspects of mathematical skills · Computer Science · Mathematics · Mathematics Education and Teaching Techniques · Psychology · Reading and Literacy Development

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