“…A great deal of correlational research has shown that factors that reduce social pain -such as social support -are associated with less physical pain as well. Th us, individuals with more social support report feeling less pain during childbirth (Chalmers, Wolman, Nikodem, Gulmezoglu, & Hofmeyer, 1995 ;Kennell, Klaus, McGrath, Robertson, & Hinkley, 1991 ), following coronary artery bypass surgery (King, Reis, Porter, & Norsen, 1993 ;Kulik & Mahler, 1989 ), and during cancer (Zaza & Baine, 2002 ). However, because of the correlational nature of these studies, it is not clear if social support directly reduces physical pain or whether some third variable (e.g., extraversion) explains these eff ects.…”