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Study Of Obscure Amazon Tribe Sheds New Light On How Language Affects Perception

Date:
August 20, 2004
Source:
Columbia University Teachers College
Summary:
During the late 1930s, amateur linguist Benjamin Lee Whorf posed the theory that language can determine the nature and content of thought. But are there concepts in one culture that people of another culture simply cannot understand because their language has no words for it?

During the late 1930s, amateur linguist Benjamin Lee Whorf posed the theory that language can determine the nature and content of thought. But are there concepts in one culture that people of another culture simply cannot understand because their language has no words for it?

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No one has ever definitively answered that question, but new findings by Dr. Peter Gordon, a bio-behavioral scientist at Teachers College, Columbia University, strongly support a "yes" answer. Gordon has spent the past several years studying the Pirahã, an isolated Amazon tribe of fewer than 200 people, whose language contains no words for numbers beyond "one," "two" and "many." Even the Piraha word for "one" appears to refer to "roughly one" or a small quantity, as opposed to the exact connotation of singleness in other languages.

What these experiments show, according to Gordon, is how having the right linguistic resources can carve out one's reality. "Whorf says that language divides the world into different categories," Gordon said. "Whether one language chooses to distinguish one thing versus another affects how an individual perceives reality."

When given numerical tasks by Gordon in which they were asked to match small sets of objects in varying configurations, adult members of the tribe responded accurately with up to two or three items, but their performance declined when challenged with eight to 10 items, and dropped to zero with larger sets of objects. The only exception to this performance was with tasks involving unevenly spaced objects. Here, the performance of participants deteriorated as the number of items increased to 6 items. Yet for sets of 7 to 10 objects, performance was near perfect. Though these tasks were designed to be more difficult, Gordon hypothesizes that the uneven spacing allowed subjects to perceive the items as smaller "chunks" of 2 or 3 items that they could then match to corresponding groups.

According to the study, performance by the Piraha was poor for set sizes above 2 or 3, but it was not random. "Pirahã participants were actually trying very hard to get the answers correct, and they clearly understood the tasks," Gordon said. Participants showed evidence of using methods of estimation and chunking to guess at quantities in larger set sizes. On average, they performed about as well as college students engaged in more complex numerical estimation tasks. Their skill levels were similar to those in pre-linguistic infants, monkeys, birds and rodents, and appeared to correlate to recent brain imaging studies indicating a different sort of numerical competence that seems to be immune to numerical language deprivation. Interestingly, Gordon noted, while Pirahã adults had difficulty learning larger numbers, Piraha children did not.

While the Pirahã words for "one" and "two" do not necessarily always refer to those specific amounts, Gordon also found that members of the tribe never used those words in combination to denote larger quantities. In the study, they also used their fingers in addition to their verbal statement of quantity, but this practice, too, was found to be highly inaccurate even for small numbers less than five.

The Pirahã language has no word for "number," and pronouns do not designate number--"he" and "they" are the same word. Most standard quantifiers like "more," "several," "all," and "each" do not exist. In general, while containing a very complex verb structure common to many Native American languages, the Pirahã language does not allow for certain kinds of comparative constructions. For example, it was not possible to ask participants whether one group of objects "has more nuts than the other" because of the lack of that construction in the Pirahã grammar. Yet, the word they use for "many," which in that language was derived from a form ob the verb meaning "to bring together," is distinct from a word that means something like "much."

Details of the study will appear in the Thursday, August 19, issue of the journal Science.

Teachers College is the largest graduate school of education in the nation. Teachers College is affiliated with Columbia University, but it is legally and financially independent. The editors of U.S. News and World Report have ranked Teachers College as one of the leading graduate schools of education in the country. For more information, please visit the college's Web site at http://www.tc.columbia.edu.


Story Source:

The above story is based on materials provided by Columbia University Teachers College. Note: Materials may be edited for content and length.


Cite This Page:

Columbia University Teachers College. "Study Of Obscure Amazon Tribe Sheds New Light On How Language Affects Perception." ScienceDaily. ScienceDaily, 20 August 2004. <www.sciencedaily.com/releases/2004/08/040820083420.htm>.
Columbia University Teachers College. (2004, August 20). Study Of Obscure Amazon Tribe Sheds New Light On How Language Affects Perception. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2004/08/040820083420.htm
Columbia University Teachers College. "Study Of Obscure Amazon Tribe Sheds New Light On How Language Affects Perception." ScienceDaily. www.sciencedaily.com/releases/2004/08/040820083420.htm (accessed October 25, 2014).

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