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The effect of psychopathy on cooperative strategies in an iterated Prisoner’s Dilemma experiment with emotional feedback

The effect of psychopathy on cooperative strategies in an iterated Prisoner’s Dilemma experiment with emotional feedback
The effect of psychopathy on cooperative strategies in an iterated Prisoner’s Dilemma experiment with emotional feedback
As decision-making research becomes more popular, the inclusion of personality traits has emerged as a focal point for an exhaustive analysis of human behaviour. In this study, we investigate the impact of psychopathic traits on cooperation in an iterated Prisoner’s Dilemma game with emotional facial feedback. Firstly, we observed how receiving a facial feedback after each decision affected players with different psychopathic trait scores, and how being informed about the opponent’s identity influenced cooperative behaviour. Secondly, we analysed the strategies adopted by each player, and how these choices were correlated with their psychopathic traits. Although our results showed no effect of different emotional content in the feedback on cooperation, we observed more cooperative behaviours in those players who were told their opponent was another fellow human, compared to those who were told it was a computer. Moreover, fearless dominance had a very small but consistent negative effect on overall cooperation and on the tendency to maintain cooperative behaviours. We also found that players’ personality scores affected the strategies they chose to play throughout the game. Hence, our experiment adds complexity to the body of work investigating psychopathic traits and social interactions, considering not only the environment of facial feedback but also the role of deception in experimental games.
Prisoner's Dilemma, Cooperation, Psychopathy (PPI-R), Strategy Analysis, Facial-Feedback
2045-2322
1-8
Testori, Martina
c9862489-e3aa-4cc2-b5d3-62140f416d64
Harris, Thehela
5faacea5-28a2-43f3-a887-08f4001ee6d3
Hoyle, Rebecca
e980d6a8-b750-491b-be13-84d695f8b8a1
Eisenbarth, Hedwig
41af3dcb-da48-402b-a488-49de88e64f0c
Testori, Martina
c9862489-e3aa-4cc2-b5d3-62140f416d64
Harris, Thehela
5faacea5-28a2-43f3-a887-08f4001ee6d3
Hoyle, Rebecca
e980d6a8-b750-491b-be13-84d695f8b8a1
Eisenbarth, Hedwig
41af3dcb-da48-402b-a488-49de88e64f0c

Testori, Martina, Harris, Thehela, Hoyle, Rebecca and Eisenbarth, Hedwig (2019) The effect of psychopathy on cooperative strategies in an iterated Prisoner’s Dilemma experiment with emotional feedback. Scientific Reports, 9, 1-8, [2299]. (doi:10.1038/s41598-019-38796-0).

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Abstract

As decision-making research becomes more popular, the inclusion of personality traits has emerged as a focal point for an exhaustive analysis of human behaviour. In this study, we investigate the impact of psychopathic traits on cooperation in an iterated Prisoner’s Dilemma game with emotional facial feedback. Firstly, we observed how receiving a facial feedback after each decision affected players with different psychopathic trait scores, and how being informed about the opponent’s identity influenced cooperative behaviour. Secondly, we analysed the strategies adopted by each player, and how these choices were correlated with their psychopathic traits. Although our results showed no effect of different emotional content in the feedback on cooperation, we observed more cooperative behaviours in those players who were told their opponent was another fellow human, compared to those who were told it was a computer. Moreover, fearless dominance had a very small but consistent negative effect on overall cooperation and on the tendency to maintain cooperative behaviours. We also found that players’ personality scores affected the strategies they chose to play throughout the game. Hence, our experiment adds complexity to the body of work investigating psychopathic traits and social interactions, considering not only the environment of facial feedback but also the role of deception in experimental games.

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Accepted/In Press date: 27 December 2018
Published date: 19 February 2019
Keywords: Prisoner's Dilemma, Cooperation, Psychopathy (PPI-R), Strategy Analysis, Facial-Feedback

Identifiers

Local EPrints ID: 427815
URI: http://eprints.soton.ac.uk/id/eprint/427815
ISSN: 2045-2322
PURE UUID: bc0aec6d-9d8e-466f-b4b5-d87d2770f4a2
ORCID for Rebecca Hoyle: ORCID iD orcid.org/0000-0002-1645-1071
ORCID for Hedwig Eisenbarth: ORCID iD orcid.org/0000-0002-0521-2630

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Date deposited: 29 Jan 2019 17:30
Last modified: 30 Jan 2020 05:10

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