Brief outline of the essay 1. introduction (will be modified after the whole essay is completed) 2. what is cell phone addiction? study finds that… 3. How do US students “addicted to cell phone usage?”—what do they do via cell phone? survey of their cell phone usage, the percentage (the numbers of their usage on “behaviors”) 4. How does these cell phone addiction work “physically” (e.g. secretes dopamine) about the process. 5. cell phone usage—psychological reasons 6. study on the influence that cell phone addiction have on their lives: psychological influence. (should be proved by study) 7. survey on the influence that cell phone addiction have on their lives: social influence. 8. discussion: the pehnomenon of US students’ cell phone addiction (can be compared or related to Taiwan students’ cell phone usage) 9. conclusion 10. Reference