Table 1.

Correlation Coefficient, Mean, the Cronbach’s Alpha, Standard Deviation, and AVE

Variables	M	SD	Cronbach’s a	AVE	1	2	3	4	5
1. Autonomy	5.51	1.39	0.90	0.76	0.87
2. Optimism	4.30	0.63	0.86	0.64	0.42**	0.80
3. Role conflict	2.90	0.97	0.78	0.68	−0.13*	−0.02	0.82
4. Engagement	4.91	1.07	0.92	0.57	0.37**	0.47**	−0.10	0.76
5. OCB	5.19	0.78	0.95	0.70	0.30**	0.49**	−0.13*	0.53**	0.83

Notes: **Significant at the 0.01 level; *significant at the 0.05 level; the square of root of AVE values are bolded.

Abbreviations: OCB, organizational citizenship behavior; AVE, average variance extracted.