人間はそういう風にできているのか？奇妙な10の心理効果 : カラパイア http://karapaia.com/archives/52271405.html

There May Be More Eyes on You Than You Think | Psychology Today https://www.psychologytoday.com/intl/blog/brainstorm/201612/there-may-be-more-eyes-you-you-think

The invisibility cloak illusion: People (incorrectly) believe they observe others more than others observe them. - PsycNET https://psycnet.apa.org/record/2016-60219-001