Hamidi, H. .; Kamyabi, M.; Manzari Tavakkoli, A. .; Zeinaddini Meymand, Z. . Investigating the Effectiveness of Choice Theory Training on Time Perspective and Psychological Capital (Resilience, Self-Efficacy, Hope, and Optimism) in Male High School Students in South Khorasan Province. ECS 2025, 1-9.