▁with ▁what ▁others ▁are ▁doing ". ▁F OM O ▁is ▁also ▁defined ▁as ▁a ▁fear ▁of ▁regret , ▁which ▁may ▁lead ▁to ▁a ▁comp uls ive ▁concern ▁that ▁one ▁might ▁miss ▁an ▁opportunity ▁for ▁social ▁interaction , ▁a ▁novel ▁experience , ▁a ▁prof itable ▁invest ment , ▁or ▁other ▁satisfying ▁events . ▁In ▁other ▁words , ▁F OM O ▁perpet u ates ▁the ▁fear ▁of ▁having ▁made ▁the ▁wrong ▁decision ▁on ▁how ▁to ▁spend ▁time ▁since ▁one ▁" can ▁imagine ▁how ▁things ▁could ▁be ▁different ". ▁ ▁Self - det erm ination ▁theory ▁( SD T ) ▁as ser ts ▁that ▁the ▁feeling ▁of ▁related ness ▁or ▁connected ness ▁with ▁others ▁is ▁a ▁legit imate ▁psych ological ▁need ▁that ▁influ ences ▁people ' s ▁psych ological ▁health . ▁In ▁this ▁theoretical ▁framework , ▁F OM O ▁can ▁be ▁understood ▁as ▁a ▁self - reg ul atory ▁state ▁ar ising ▁from ▁situ ational ▁or ▁long - term ▁per ception ▁that ▁one ' s ▁needs ▁are ▁not ▁being ▁met . ▁ ▁With ▁the ▁development ▁of ▁the ▁internet , ▁people ' s ▁social ▁and ▁communic ative ▁experiences , ▁originally ▁mostly ▁face - to - face , ▁have ▁expanded ▁to ▁include ▁much ▁time ▁interact ing ▁over ▁social ▁media . ▁On ▁one ▁hand , ▁modern ▁techn ologies ▁( e . g ., ▁mobile ▁ph ones , ▁smart ph ones ) ▁and ▁social ▁networking ▁services ▁( e . g ., ▁Inst agram , ▁Facebook , ▁Twitter ) ▁provide ▁a ▁unique ▁opportunity ▁for ▁people ▁to ▁be ▁soci ally ▁engaged ▁with