Warwick, UK, March 21, 2013 – Teamwork has been fundamental in humanity’s greatest achievements but scientists have found that working together has its evolutionary roots in our nearest primate relatives – chimpanzees.
A series of trials by scientists found that chimpanzees not only coordinate actions with each other but also understand the need to help a partner perform their role to achieve a common goal.
Pairs of chimpanzees were given tools to get grapes out of a box. They had to work together with a tool each to get the food out. Scientists found that the chimpanzees would solve the problem together, even swapping tools, to pull the food out.
The study, published in Biology Letters, by scientists from Warwick Business School, UK, and the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, sought to find out if there were any evolutionary roots to humans’ ability to cooperate and coordinate actions.
Dr Alicia Melis, Assistant Professor of Behavioural Science at Warwick Business School, said: “We want to find out where humans’ ability to cooperate and work together has come from and whether it is unique to us.
“Many animal species cooperate to achieve mutually beneficial goals like defending their territories or hunting prey. However, the level of intentional coordination underlying these group actions is often unclear, and success could be due to independent but simultaneous actions towards the same goal.
“This study provides the first evidence that one of our closest primate relatives, the chimpanzees, not only intentionally coordinate actions with each other but that they even understand the necessity to help a partner performing her role in order to achieve the common goal.
“These are skills shared by both chimpanzees and humans, so such skills may have been present in their common ancestor before humans evolved their own complex forms of collaboration”
The study, revealed in a paper entitled Chimpanzees’ (Pan troglodytes) strategic helping in a collaborative task, looked at 12 chimpanzees at Sweetwaters Chimpanzee Sanctuary in Kenya, which provides lifelong refuge to orphaned chimpanzees, who have been illegally traded as pets or saved from the ‘bushmeat’ trade.
The chimpanzees were put into pairs, with one needed at the back and one at the front of a sealed plastic box. Through a hole the chimpanzee at the back had to push the grapes onto a platform using a rake. The chimpanzee at the front then had to use a thick stick and push it through a hole to tilt the platform so the grapes would fall to the floor and both could pick them up to eat.
One chimpanzee was handed both tools and they had to decide which tool to pass to the partner. Ten out of 12 individuals solved the task figuring out that they had to give one of the tools to their partner and in 73 per cent of the trials the chimpanzees chose the correct tool.
Dr Melis said: “There were great individual differences regarding how quickly they started transferring tools to their partner. However, after transferring a tool once, they subsequently transferred tools in 97 per cent of the trials and successfully worked together to get the grapes in 86 per cent of the trials.
“This study provides the first evidence that chimpanzees can pay attention to the partner’s actions in a collaborative task, and shows they know their partner not only has to be there but perform a specific role if they are to succeed. It shows they can work strategically together just like humans do, working out that they not only need to work together but what roles each chimpanzee has to do in order to succeed.
“Although chimpanzees are generally very competitive when trying to gain access to food and would rather work alone and monopolize all the food rewards, this study shows that they are willing and able to strategically support the partner performing their role when their own success is dependent on the partner’s.”
NB: This study was approved by the local ethics committee at Sweetwater Sanctuary and relevant authorities in Kenya. The chimpanzees were never deprived of food and water was available at all times. They could choose to stop participating at any time.
For a picture of two chimpanzees at Sweetwater Sanctuary click here
To interview Dr Alicia Melis contact her on:
Email: Alicia.Melis@wbs.ac.uk
Tel: 024 765 24498
Mobile: 07706458720
For a copy of the paper and a picture of Dr Alicia Melis contact:
Ashley Potter
Press & PR Officer
Warwick Business School
The University of Warwick
Coventry
CV4 7AL
Tel: +44 (0)24 7657 3967
Mob: +44 (0)7733 013264
Notes to editors:
Warwick Business School, located in central England, is the largest department of the University of Warwick and the UK's fastest rising business school according the Financial Times. WBS is triple accredited by the leading global business education associations and was the first in the UK to attain this accreditation. Offering the full portfolio of business education courses, from undergraduate through to MBAs, and with a strong Doctoral Programme, WBS is the complete business school. Students at WBS currently number around 6,500, and come from 125 countries. Just under half of faculty are non-UK, or have worked abroad. WBS Dean, Professor Mark P Taylor, is among the most highly-cited scholars in the world and was previously Managing Director at BlackRock, the world's largest asset manager.
Alicia Melis is Assistant Professor in the Behavioural Science Group at Warwick Business School. Prior to joining Warwick Business School she was a postdoctoral researcher at the Department of Developmental and Comparative Psychology at the Max Planck Institute for Evolutionary Anthropology (Leipzig ). She studied Biology at the Freie University of Berlin and received her PhD in Psychology from the University of Leipzig under the supervision of Michael Tomasello, Brian Hare and Josep Call. She investigates the phylogenetic roots and the development of human cooperative and prosocial behavior. She conducts studies with humans (mainly young children) and chimpanzees in African sanctuaries.
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