1) All papers must be typed or printed by the word processor. Type size must be a font acceptable as indicated in Chapter 2 of the APA Manual such as Times New Roman, 12.
2) There shall be a margin of one inch on the top, bottom, and each side of the page.
3) Double-space, the paper must be at a minimum of 6 pages (excluding the title page, reference page, and appendix) in length. Indent lines when beginning paragraphs.
4) Number each page of your research paper according to APA format. Page numbers to appear within the top, one-inch margin.
5) Properly cite and include an APA reference page at the end. 
6. 5-10 sources
Sub-categories.
1. Time management
How long do teenagers spend on their smartphones every day? Looking for some data on teenagers’ questionnaire reports. Teenagers spend a lot of time on their phones and neglect to interact with their families.
2. Mental health
Excessive use of mobile phones by teenagers has an impact on mental health. First, the ability to regulate emotions is reduced. Second, cognitive impairment. Third, self-cognition bias. Finally, social impairment.
3. Mental health countermeasures for teenagers’ mobile phone dependence.
We can intervene at the social level, the school level, and the family level.
4. The spread of misinformation
First, the influence of social media. Many teenagers get information through social media, and unverified news and rumors often appear on these platforms. Second, lack of critical thinking. Teenagers are relatively weak in information screening ability and may find it difficult to judge the authenticity of information.
5. Learning efficiency
The advantages and disadvantages of using smartphones for learning efficiency. For example, it can help you quickly find electronic publications and communicate with teachers. However, it can also affect learning efficiency due to pop-up ads or games.