Figure 1:

Schematic of Patent Race Game. Prior to each round, a fixation screen appeared for a random duration between 4–8 s. A.) Subjects were then presented with information regarding their endowment ($4), the endowment of the opponent ($5), and the potential prize ($10). B.) The arrow keys allowed subjects to select how much to invest (indicated by the number of white boxes) and the space bar was then used to submit the selected investment amount. C.) The opponent’s choice was revealed 2–6 s later. If the subject’s investment was strictly more than those of the opponent, the subject won the prize; In either case, the subject kept the portion of the endowment not invested.