Table 1. The subject variables and behavioral performance (Mean ± Std.E)^*.

Group	RPM	Ef	Onset	Current AT	Gt	Ds
	(%)	(per month)	age	(per week)	AVG/RPG/Both	(sec.)
Expert	90±10.28	2.4±.21	8.03	46.67±2.1	27//	25.2±3.2
Amateur	90.2±9.8	2.1±.14	8.9	14.2±1.1	14/4/12	15.4±3.5

*RPM = Raven's Progressive Matrices, Ef = physical exercise frequency per month, Onset age = the onset age of playing video games, AT = the average weekly amount of time (in hours) spent on AVG playing, Gt = game type, AVG = Defence Of the Ancients or League Of Legends (two specific AVGs played by the experts), RPG = role play games (unlike the AVG, the RPG does not require high reaction speed and good hand-eye coordination under stringent time pressure. In a RPG, a player assumes the roles of characters in a fictional setting and takes responsibility for acting out these roles through a process of structured decision-making or character development.), Ds = Dodge The Squares (Players move a red block within a box to avoid crashing into blue blocks and touching the edge of the box. This game was used to further verify the group membership between experts and amateurs. http://www.gamemew.com/skill-games/square-dodge.html).