根据给定的提示，编写一篇英语作文，要求在1000字以内。提示为“当代社会中，社交网络对青少年的影响”。 
青少年使用社交网络的相关数据以及影响分析的报道，如社交网络对青少年心理与行为的影响等。
Social media has become an integral part of contemporary society, especially for teenagers. Various studies have explored the effects of social networks on young people's behavior and psychological well-being.

On one hand, social media offers teenagers a way to connect with friends, family, and individuals with shared interests. It can also help to develop social skills and create opportunities for community building.

On the other hand, excessive social media usage can lead to negative impacts on mental health, such as depression, anxiety, and poor sleep quality. It can also contribute to the development of addictive behavior and promote the spread of cyber-bullying and online harassment.

According to a survey conducted by the Pew Research Center, about 81% of teenagers aged 13 to 17 use social media. Among them, nearly half reported feeling pressure to constantly showcase their "perfect" lives online. This phenomenon can create a distorted reality and increase the likelihood of social comparison and decreased self-esteem.

Moreover, studies have shown that social media use can negatively affect cognitive development and academic performance. This is due to factors such as distraction from studying, the temptation to multitask with social media, and exposure to inappropriate content.

In conclusion, while social media can offer many benefits for teenagers, it’s important to be aware of its potential negative consequences. Parents, educators, and social media companies have a shared responsibility to promote safe, responsible, and balanced use of these platforms.