TABLE 4.

Results of the multiple regression analysis of moderating effects (N = 254).

Variable	UPB
	Model 10	Model 11	Model 12	Model 13	Model 14	Model 15
Control variables
Gender	–0.023	–0.030	–0.008	–0.015	0.001	–0.013
Age	0.060	0.067	0.016	0.024	0.064	0.038
Position	–0.070	–0.073	–0.012	–0.018	–0.031	–0.048
Positional tenure	–0.049	–0.050	–0.061	–0.061	–0.085	–0.065
Independent variables
QUAN			0.216***	0.206**
QUAL					0.026	0.027
IMM	0.178**	0.208**	0.107	0.137*	0.170**	0.201**
Moderating variable
OI	0.451***	0.442***	0.370***	0.366***	0.441***	0.437***
Interaction variables
OI*IMM		0.211*		0.184*		0.214*
R 2	0.200	0.224	0.245	0.256	0.206	0.223
ΔR2	0.180	0.200	0.223	0.227	0.181	0.198
F	10.386***	10.046***	11.244***	10.698***	8.845***	8.859***

***p < 0.001, **p < 0.01, *p < 0.05.