1. This is suggested in his Four-stage Theory of the Republic of China. 2. In Russia, the Mensheviks believed the two-stage theory applied to Tsarist Russia. 3. McAuliffe, Eriksen and Kress contrast personality style theory with stage theory . 4. Stage theories typically focus on age-appropriate developmental tasks to be achieved at each stage.5. Thus he follows this model immediately with a stage theory outlining the process of psychosynthesis. 6. She popularized life stage theory for adults, much as Dr . Spock did for children. 7. Against this, Chen Shui-bian proposed his own four-stage theory . 8. The theory deals with the developmental stage theory . 9. In the Soviet Union the two-stage theory was opposed by the Trotskyist theory of permanent revolution. 10. For stage theories , milestones indicate a stage transition.