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From Wikipedia, the free encyclopedia

Yerkish
Lexigram
Created byErnst von Glasersfeld
Setting and usageUse a keyboard to punch keys with logograms
Users4 (apes)[citation needed]
Purpose
Language codes
ISO 639-3None (mis)
GlottologNone
IETFart-x-yerkish

Yerkish is an artificial language developed for use by non-human primates. It employs a keyboard whose keys contain lexigrams, symbols corresponding to objects or ideas.[1]

Lexigrams were notably used by the Georgia State University Language Research Center to communicate with bonobos and chimpanzees. Researchers and primates were able to communicate using lexigram boards made in up to three panels with a total of 384 keys.[1][2]

Context

Lexigram representing Sue Savage-Rumbaugh, a developer of the language

The Yerkish language was developed by Ernst von Glasersfeld and used by Duane Rumbaugh and Sue Savage-Rumbaugh of Georgia State University while working with primates at the Yerkes National Primate Research Center of Emory University in Atlanta, Georgia. Primates were taught to communicate by means of a lexigram board, a computerized array of keys labeled with lexigrams. Von Glasersfeld coined the term "lexigram" in 1971, created the first 120 of them, and designed the grammar that regulated their combination. This artificial language was called Yerkish in honor of Robert M. Yerkes, the founder of the laboratory within which the lexigrams were first used.

The first ape trained to communicate in Yerkish was the chimpanzee Lana, beginning in 1973 within the context of the LANA project. Researchers were hoping Lana would not only interpret the Yerkish language, but would also participate in communication with others through this newfound language.

Design considerations

Lexigram concept

Research leading to 1973 suggested chimpanzees could acquire and retain symbolic use of visual items. In an attempt to structure the use of symbols as language, Yerkish formalized the use of the lexigram, a graphic design which represents a word but is not necessarily indicative of the object to which it refers.[3]

Each lexigram is designed to be semantically and syntactically unequivocal, a conscious effort to reduce the ambiguity of English. For example, the use of color conveys semantic code, with red lexigrams identifying ingestible items like food and drink, blue lexigrams designating activities, and violet lexigrams representing animate beings like humans.

Existing technical limitations guided lexigrams to be constructed by 9 single elements which could be combined by being superimposed. The lexigram for water, which is red in color, is a combination of elements 5, a circle, and 9, a wavy line.

Von Glaserfeld created approximately 150 of the first lexigrams in the Yerkish language.

Interface

Keyboard

A lexigram keyboard was created for Lana with each key representing various nouns or verbs such as food, eat, apple, drink, etc.

Von Glaserfeld used 25 of them in his initial experiment with Lana. Each of these keys was 112 x 1 inch and lit up when pressed.[3]

After pressing a certain key, the corresponding item would emerge from a food dispenser placed next to the keyboard, and through a series of experiments, researchers hoped that Lana would learn to interpret what each key would correlate to and learn to meaningfully communicate her requests.[4]

See also

Notes

  1. ^ a b "Interactive Lexigram, History of Ape Language". Great Ape Trust. 2010. Archived from the original on May 20, 2010.
  2. ^ Jeffrey Kluger, "Inside the Minds of Animals", Time, August 5, 2010.
  3. ^ a b Rumbaugh, Duane M.; Gill, Timothy V.; Brown, Josephine V.; von Glasersfeld, E. C.; Pisani, Pier; Warner, Harold; Bell, C. L. (September 1973). "A computer-controlled language training system for investigating the language skills of young apes". Behav. Res. Methods Instrum. 5 (5): 385–392. doi:10.3758/BF03200213. S2CID 62689872.
  4. ^ Bettoni, Marco (2007). "The Yerkish Language. From Operational Methodology to Chimpanzee Communication" (PDF). Constructivist Foundations. 2: 32–34 – via weknow.ch.

References

  1. Rumbaugh, D. M. ed. (1977) Language Learning by a Chimpanzee. The LANA Project. New York, Academic Press
  2. von Glasersfeld, E., Department of Psychology, University of Georgia. The Yerkish language for Non-Human Primates Archived 2018-09-22 at the Wayback Machine. American Journal of Computational Linguistics, 1974, 1.
  3. Bettoni M. C. (2007) The yerkish language: From operational methodology to chimpanzee communication. Constructivist Foundations 2(2-3): 32–38.
  4. Rumbaugh, Duane M.; Gill, Timothy V.; Brown, Josephine V.; von Glasersfeld, E. C.; Pisani, Pier; Warner, Harold; Bell, C. L. (September 1973). "A computer-controlled language training system for investigating the language skills of young apes". Behavior Research Methods & Instrumentation. 5 (5): 385–392. doi:10.3758/BF03200213.
This page was last edited on 3 December 2023, at 05:56
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