Table 1.

Descriptive statistics of psychological variables of officials’ mental toughness.

Groups		N	Mean	SD	Minimum	Maximum
Self-confidence	A	20	24.50	2.48	21.00	30.00
	B	20	24.90	2.99	20.00	30.00
	C	20	23.05	3.39	14.00	28.00
Negative energy	A	20	21.40	3.72	14.00	27.00
	B	20	21.60	3.60	16.00	28.00
	C	20	23.00	3.96	16.00	30.00
Attention-control	A	20	23.15	3.10	16.00	28.00
	B	20	21.10	3.64	14.00	27.00
	C	20	23.05	3.20	15.00	27.00
Visual imagery	A	20	25.75	2.45	16.00	30.00
	B	20	24.25	2.67	20.00	29.00
	C	20	24.80	3.19	17.00	29.00
Motivational level	A	20	25.40	2.78	20.00	29.00
	B	20	25.70	3.91	14.00	30.00
	C	20	24.85	2.21	21.00	30.00
Positive energy	A	20		3.08
	B	20	25.05	2.82	20.00	29.00
	C	20		2.97
Attitude-control	A	20	24.40	3.17	18.00	30.00
	B	20	25.55	2.96	21.00	30.00
	C	20	25.10	2.34	21.00	28.00