‘Universal’ Personality Traits Don't Necessarily Apply to Isolated Indigenous People

Study of farmer-foragers raises doubt about application of popular personality model

2013-01-06

Five personality traits widely thought to be universal across cultures might not be, according to a study of an isolated Bolivian society.

Researchers who spent two years looking at 1,062 members of the Tsimane culture found that they didn’t necessarily exhibit the five broad dimensions of personality — openness, conscientiousness, extraversion, agreeableness and neuroticism — also known as the “Big Five.”

While previous research has found strong support for the Big Five traits in more developed countries and across some cultures, these researchers discovered more evidence of a Tsimane “Big Two”: socially beneficial behavior, also known as prosociality, and industriousness. These Big Two combine elements of the traditional Big Five, and may represent unique aspects of highly social, subsistence societies.

“Similar to the conscientiousness portion of the Big Five, several traits that bundle together among the Tsimane included efficiency, perseverance and thoroughness. These traits reflect the industriousness of a society of subsistence farmers,” said the study’s lead author, Michael Gurven, PhD, of the University of California, Santa Barbara. “However, other industrious traits included being energetic, relaxed and helpful. In small-scale societies, individuals have fewer choices for social or sexual partners and limited domains of opportunities for cultural success and proficiency. This may require abilities that link aspects of different traits, resulting in a trait structure other than the Big Five.”

The Tsimane, who are forager-farmers, live in communities ranging from 30 to 500 people dispersed among approximately 90 villages. Since the mid-20th century, they have come into greater contact with the modern world but mortality rates remain high (approximately 20 percent of babies born never reach age 5) and the fertility rate is very high (approximately nine births per woman), the study said. Most Tsimane are not formally educated, with a literacy rate close to 25 percent. Some 40 percent speak Spanish in addition to their native language. They live in extended family clusters that share food and labor and they limit contact with outsiders unless absolutely necessary, according to the authors.

Five personality traits widely thought to be universal across cultures might not be, according to a study of an isolated Bolivian society.

Researchers who spent two years looking at 1,062 members of the Tsimane culture found that they didn’t necessarily exhibit the five broad dimensions of personality — openness, conscientiousness, extraversion, agreeableness and neuroticism — also known as the “Big Five.” The American Psychological Association’s Journal of Personality and Social Psychology® published the study online Dec. 17.

While previous research has found strong support for the Big Five traits in more developed countries and across some cultures, these researchers discovered more evidence of a Tsimane “Big Two”: socially beneficial behavior, also known as prosociality, and industriousness. These Big Two combine elements of the traditional Big Five, and may represent unique aspects of highly social, subsistence societies.

“Similar to the conscientiousness portion of the Big Five, several traits that bundle together among the Tsimane included efficiency, perseverance and thoroughness. These traits reflect the industriousness of a society of subsistence farmers,” said the study’s lead author, Michael Gurven, PhD, of the University of California, Santa Barbara. “However, other industrious traits included being energetic, relaxed and helpful. In small-scale societies, individuals have fewer choices for social or sexual partners and limited domains of opportunities for cultural success and proficiency. This may require abilities that link aspects of different traits, resulting in a trait structure other than the Big Five.”

The Tsimane, who are forager-farmers, live in communities ranging from 30 to 500 people dispersed among approximately 90 villages. Since the mid-20th century, they have come into greater contact with the modern world but mortality rates remain high (approximately 20 percent of babies born never reach age 5) and the fertility rate is very high (approximately nine births per woman), the study said. Most Tsimane are not formally educated, with a literacy rate close to 25 percent. Some 40 percent speak Spanish in addition to their native language. They live in extended family clusters that share food and labor and they limit contact with outsiders unless absolutely necessary, according to the authors.

Source: American Psychological Association