Table II.

Description of factors obtained from TRB variables and theta variables that accounted for more than 10% of total variance

Factors	Eigen value	Accounted variance (in %)	Variables with positive loadings, (r), and [N]	Variables with negative loadings, (r), and [N]
TRB factor‐1	10.25	37.96	All the RT variables (0.93 to 0.98) [10]	None
TRB factor‐2	5.60	20.73	SF for 50 following losing trends/trials (0.93 to 0.85) [5]	SF for 10 following losing trends (−0.54 to −0.73) [3]
TRB factor‐3	3.33	12.33	Number of times selecting 50 following gaining trends (0.85 to 0.91) [3]	None
TRB factor‐4	2.74	10.14	Number of times selecting 10 following gaining trends (0.77 to 0.89) [3]	None
Theta factor‐1	23.91	22.13	θ, θ1, and θ2 during +50 and +10 conditions at anterior areas: frontal (0.59 to 0.86) [18] and central leads (0.53 to 0.67) [15]	None
Theta factor‐2	13.78	12.76	θ, θ1, and θ2 during –50 condition at posterior areas: parietal (0.56 to 0.85) [9] and central leads (0.55 to 0.84) [9]	None
Theta factor‐3	13.63	12.62	θ and θ2 during –10 condition at anterior areas: frontal (0.68 to 0.81) [6] and central leads (0.66 to 0.79) [11]	None
Theta factor‐4	13.10	12.13	θ, θ1, and θ2 during +50 condition at posterior areas: parietal (0.64 to 0.79) [9] and central leads (0.55 to 0.68) [8]	None

SF, selection frequency or the number of times an amount (50¢ or 10¢) is chosen for betting.

For each factor, eigenvalue, percentage of variance accounted for, loading index (r), and the number of variables included (N) are listed. Only the factors that had significantly high positive (r ≥ +0.5) and negative (r ≤ –0.5) loadings have been selected.