Source:
When Parents Play Favorites, Preferring one child over another
By Ilan Shrira, The Narcissus in All of Us. Ilan Shrira is a social psychologist at Lake Forest College.
Joshua D. Foster, Assistant Professor of Social Psychology at the University of South Alabama
Posted January 10, 2009
https://www.psychologytoday.com/blog/the-narcissus-in-all-us/200901/when-parents-play-favorites