Impatient traders or contingent reciprocators? Evidence for the extended time-course of grooming exchanges in baboons

Rebecca E. Frank, Joan Silk

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The scarcity of evidence for contingent reciprocity has led to a growing interest in how market forces shape the distribution of exchanges in animal groups. In a biological market, supply and demand determines the value of an exchange, and individuals choose to trade with the partner offering the highest value. Partners maximize their immediate benefits without the need to monitor the balance of their exchange over time. Applied to grooming exchanges in primate groups, a market model predicts that females will primarily balance the amount of grooming they trade within single bouts, particularly when all partners offer similar value. If some partners can offer other benefits, like reduced aggression, females may exchange grooming for those benefits. In such cases, grooming will not be evenly balanced within bouts. Here, we examine the patterning of grooming in a group of free-ranging olive baboons (Papio anubis). In contrast to predictions derived from a biological market model, two-thirds of all grooming bouts in this group were completely one-sided and females did not consistently provide more grooming to higher-ranking partners. Grooming was more evenly balanced across multiple bouts than within single bouts, suggesting that females are not constrained to complete exchanges within single transactions.

Original languageEnglish (US)
Pages (from-to)1123-1135
Number of pages13
JournalBehaviour
Volume146
Issue number8
DOIs
StatePublished - Aug 1 2009
Externally publishedYes

Fingerprint

Grooming
Papio
Papio anubis
markets
supply balance
aggression
Primates
Biological Models
prediction
Aggression
animals

Keywords

  • Baboons
  • Biological market model
  • Grooming
  • Rank
  • Reciprocity

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Behavioral Neuroscience

Cite this

Impatient traders or contingent reciprocators? Evidence for the extended time-course of grooming exchanges in baboons. / Frank, Rebecca E.; Silk, Joan.

In: Behaviour, Vol. 146, No. 8, 01.08.2009, p. 1123-1135.

Research output: Contribution to journalArticle

@article{d79d037d9ab14365a071f4e00cc454de,
title = "Impatient traders or contingent reciprocators? Evidence for the extended time-course of grooming exchanges in baboons",
abstract = "The scarcity of evidence for contingent reciprocity has led to a growing interest in how market forces shape the distribution of exchanges in animal groups. In a biological market, supply and demand determines the value of an exchange, and individuals choose to trade with the partner offering the highest value. Partners maximize their immediate benefits without the need to monitor the balance of their exchange over time. Applied to grooming exchanges in primate groups, a market model predicts that females will primarily balance the amount of grooming they trade within single bouts, particularly when all partners offer similar value. If some partners can offer other benefits, like reduced aggression, females may exchange grooming for those benefits. In such cases, grooming will not be evenly balanced within bouts. Here, we examine the patterning of grooming in a group of free-ranging olive baboons (Papio anubis). In contrast to predictions derived from a biological market model, two-thirds of all grooming bouts in this group were completely one-sided and females did not consistently provide more grooming to higher-ranking partners. Grooming was more evenly balanced across multiple bouts than within single bouts, suggesting that females are not constrained to complete exchanges within single transactions.",
keywords = "Baboons, Biological market model, Grooming, Rank, Reciprocity",
author = "Frank, {Rebecca E.} and Joan Silk",
year = "2009",
month = "8",
day = "1",
doi = "10.1163/156853909X406455",
language = "English (US)",
volume = "146",
pages = "1123--1135",
journal = "Behaviour",
issn = "0005-7959",
publisher = "Brill",
number = "8",

}

TY - JOUR

T1 - Impatient traders or contingent reciprocators? Evidence for the extended time-course of grooming exchanges in baboons

AU - Frank, Rebecca E.

AU - Silk, Joan

PY - 2009/8/1

Y1 - 2009/8/1

N2 - The scarcity of evidence for contingent reciprocity has led to a growing interest in how market forces shape the distribution of exchanges in animal groups. In a biological market, supply and demand determines the value of an exchange, and individuals choose to trade with the partner offering the highest value. Partners maximize their immediate benefits without the need to monitor the balance of their exchange over time. Applied to grooming exchanges in primate groups, a market model predicts that females will primarily balance the amount of grooming they trade within single bouts, particularly when all partners offer similar value. If some partners can offer other benefits, like reduced aggression, females may exchange grooming for those benefits. In such cases, grooming will not be evenly balanced within bouts. Here, we examine the patterning of grooming in a group of free-ranging olive baboons (Papio anubis). In contrast to predictions derived from a biological market model, two-thirds of all grooming bouts in this group were completely one-sided and females did not consistently provide more grooming to higher-ranking partners. Grooming was more evenly balanced across multiple bouts than within single bouts, suggesting that females are not constrained to complete exchanges within single transactions.

AB - The scarcity of evidence for contingent reciprocity has led to a growing interest in how market forces shape the distribution of exchanges in animal groups. In a biological market, supply and demand determines the value of an exchange, and individuals choose to trade with the partner offering the highest value. Partners maximize their immediate benefits without the need to monitor the balance of their exchange over time. Applied to grooming exchanges in primate groups, a market model predicts that females will primarily balance the amount of grooming they trade within single bouts, particularly when all partners offer similar value. If some partners can offer other benefits, like reduced aggression, females may exchange grooming for those benefits. In such cases, grooming will not be evenly balanced within bouts. Here, we examine the patterning of grooming in a group of free-ranging olive baboons (Papio anubis). In contrast to predictions derived from a biological market model, two-thirds of all grooming bouts in this group were completely one-sided and females did not consistently provide more grooming to higher-ranking partners. Grooming was more evenly balanced across multiple bouts than within single bouts, suggesting that females are not constrained to complete exchanges within single transactions.

KW - Baboons

KW - Biological market model

KW - Grooming

KW - Rank

KW - Reciprocity

UR - http://www.scopus.com/inward/record.url?scp=70149089699&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70149089699&partnerID=8YFLogxK

U2 - 10.1163/156853909X406455

DO - 10.1163/156853909X406455

M3 - Article

AN - SCOPUS:70149089699

VL - 146

SP - 1123

EP - 1135

JO - Behaviour

JF - Behaviour

SN - 0005-7959

IS - 8

ER -