Table 9 Percentages of individuals adopting each one of the four strategies. Statistical significance describes how significantly different from zero are the percentages estimated through MLE. We also show the correlation matrix between the strategies adopted by each participant and their psychopathic traits.

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

Gamma

TF3T

2TF2T

Grim

ALLD

Percentage of participants adopting the selected strategies.

0.88**

0.15

0.22

0.07

0.55**

(0.13)

(0.10)

(0.11)

(0.05)

(0.08)

Correlation matrix between strategies adopted and psychopathic traits.

 

TF3T

2TF2T

Grim

ALLD

Fearless Dominance

−0.03

0.01

−0.01

0.01

Self-centred impulsivity

0.14*

−0.08

0.07

−0.06

Coldheartedness

0.20**

−0.19**

0.05

0.12.

  1. Bootstrapped standard errors (shown in parentheses) used to calculate p-values. Significance level: ‘***’ < 0.001 ‘**’ < 0.01 ‘*’ < 0.05 and ‘.’ < 0.1.
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