Original Articles

• Do the dark triad and self-perceived mate value predict intention to mate poach?

  Ezgi Erik, Manpal Singh Bhogal

  1-4

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• Evolution of cooperation: The analysis of the case wherein a different player has a different benefit and a different cost

  Shun Kurokawa

  5‐8

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• The watching eyes effect on charitable donation is boosted by fewer people in the vicinity

  Ryo Oda, Ryota Ichihashi

  9-12

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