Figure 1
From: Vasopressin enhances human preemptive strike in both males and females
Participant display during the PSG. The remaining time (out of 15 seconds) was displayed at the top. Two to four seconds (randomly jittered) after the game started, a mouse cursor appeared in the white box at the bottom of the computer display. This onset timing was identical for both players. A player who decided to “attack” (though we did not use such loaded words anywhere in the instructions or on the screen) then moved the mouse cursor to the red button and clicked it.
