1992 Fiscal Year Final Research Report Summary
Comparative study of visual information processing in humans and chimpanzees.
| Project/Area Number |
03610048
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Psychology
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MATSUZAWA Tetsuro Primate Research Institute Kyoto University, Professor, 霊長類研究所, 教授 (60111986)
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| Project Period (FY) |
1991 – 1992
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| Keywords | chimpanzee / pattern recognition / Kanji-characters / comparative cognition / information processing / Memory process / Short-term memory / Concept of number |
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| Research Abstract |
The present study aimed to cralify the similarity and difference between humans and chimpanzees in perceptual and cognitive processes. The topics were as follows.
NUMBER PERCEPTION : A chimpanzee named Ai, 16 years old female, learned to label the number of dots presented on a CRT screen and asked to choose a crresponding Arabic numeral on the other CRT screen.
She learned to label one through ten, and her accuracy of the performance reached to 85% correct when the numbers were presented randomly. It means that the chimpanzee showed a rudimental ability of processing the numbers.
MEMORY PROCESS : The chimpanzee also learned to remember the strings of numerals up to six. The task is so-called matching to sample. She can reproduce 6 numerals in a string, where she spontaneously developed her favorite order of reproducing the string from center to right then back to left. She also learned to 2 numerals and reproduce then after short period of delay interval.
PATTERN PERCEPTION OF KANJI : The chimpanzee learnd to do matching to sample of Kanji-characters. 40 Kanji characters were used as samples. She discriminated those 40 characters at about 80%
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