EFFECT OF GOAL DIFFICULTY AND POSITIVE REINFORCEMENT ON ENDURANCE PERFORMANCER WEINBERG,H GARLAND, L BRUYA,A JACKSONJOURNAL OF SPORT & EXERCISE PSYCHOLOGY(1990)引用 35|浏览4暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要