32 Why do researchers define “using Facebook excessively” as addicted behavior?
(A) People spend too much money and time browsing feeds.
(B) The behavior meets some addiction standards and has withdrawal symptoms.
(C) People rely on them to have emotional lifts when they are upset.
(D) Facebook use is linked to feelings of social isolation, mentally and physically.

Nowadays, in public or private places, we tend to scroll mindlessly through our social media feeds when we have a few spare空閒的 minutes (or for some, hours). And as we probably know intuitively直覺地, and as the research is confirming, it is not the best habit when it comes to our collective psychology.
如今，在公共場所或私人場所，當我們有幾分鐘（或幾小時）的空閒時間時，我們往往會漫不經心地滾動瀏覽我們的社交媒體源。 正如我們可能憑直覺知道的那樣，正如研究所證實的那樣，就我們的集體心理而言，這並不是最好的習慣。

The American Academy of Pediatrics兒科 has warned about the potential for negative effects of social media in young kids and teens, including cyber-bullying and “Facebook depression.” 初But the same risks may be true for adults, across generations. A review study suggests “Facebook Addiction Disorder” because addiction criteria標準, such as neglect of personal life, mental preoccupation全神貫注, escapism逃避現實, mood modifying experiences, tolerance and concealing隱藏 the addictive behavior, appear to be present in some people who use social networks excessively過度地. 
美國兒科學會警告稱，社交媒體可能會對幼兒和青少年產生負面影響，包括網絡霸凌和“Facebook 抑鬱症”。 但同樣的風險可能也適用於幾代人的成年人。 一項審查研究提出“Facebook 成癮症”，因為成癮標準，例如忽視個人生活、精神上的專注、逃避現實、改變情緒的經歷、容忍和隱瞞成癮行為，似乎存在於一些過度使用社交網絡的人身上。

Why do researchers define “using Facebook excessively” as addicted behavior?
為什麼研究人員將“過度使用 Facebook”定義為成癮行為？

The behavior meets some addiction standards and has withdrawal symptoms戒斷症狀.
行為符合某些成癮標準並有戒斷症狀。