文献综述批判性分析

Critique the following literature review excerpt: 'The impact of social media on adolescent mental health has been widely studied. Most studies show a strong negative correlation between social media use and depression. For example, Twenge et al. (2019) found that increased social media use was associated with higher rates of depression and anxiety. Therefore, social media is clearly harmful to adolescents.' Identify specific weaknesses in the analysis, including overgeneralization, selective citation, ignoring contradictory evidence, and whether the conclusions are supported by the evidence presented. ** Return the answer as a bullet list. ** Constraints: - - Exactly 5 bullet points. - - <=120 words total. - - No direct quotes.