David Riesman Jr. (Sebtembar 22, 1909 - May 10, 2002) wuxuu ahaa cilmi-nafsi yaqaan Mareykan ah iyo bare kaasoo aad loogu yaqaanay daraasaddiisa bulshada iyo dhaqanka Mareykanka. Buuggiisii ugu caansanaa, "The Lonely Crowd: A Study of the Change Character American," oo la daabacay 1950-kii, wuxuu sahamiyay ka beddelka dhaqan ku salaysan caado iyo hagitaan gudaha ah oo loo guuro mid ku salaysan is-waafajin iyo toosnaan dibadda ah. Sida magaca saxda ah, "David Riesman Jr." Waxa loola jeedaa shakhsiga laftiisa, kaas oo wax weyn ku soo kordhiyey cilmiga bulshada, waxaana lagu tiriyaa inuu hormuud ka yahay daraasadda dhaqanka iyo bulshada Maraykanka.