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以下是原文：

This research aims to investigate the correlation between the utilization of social media platforms and the levels of self-esteem among young adults aged between 18 to 25 years old. Data were collected using a standardized questionnaire developed based on the Rosenberg Self-Esteem Scale and the Social Media Index. The sample consisted of 200 participants randomly selected from universities in the United States. The results indicated a significant negative correlation between social media usage and self-esteem levels among young adults. Regression analysis revealed that social media usage accounted for 23% of the variance in self-esteem levels.

重写后的文章：

本研究旨在探讨18至25岁年轻成年人使用社交媒体平台和自尊水平之间的相关性。我们使用了基于罗森伯格自尊量表和社交媒体指数的标准化问卷收集数据。从美国的大学中随机抽取了200名参与者作为样本。结果显示，年轻成年人的社交媒体使用与自尊水平之间存在显著的负相关性。回归分析表明，社交媒体使用解释了自尊水平变异的23%。