“…' Gaski (1984, p. 10) has synthesized the various definitions of power, and defines it as ''the ability to cause someone to do something s/he would not have done otherwise.'' More specifically, French and Raven (1959) have classified the sources of social power into (1) coercive power sources (B perceives that A has the ability to mediate punishments to B), (2) reward power sources (B perceives that A has the ability to reward B), (3) referent or identification sources of power (B identifies with A), (4) expert sources of power (B perceives that A has some special knowledge or expertise), and (5) legitimate power sources (B perceives that A has a legitimate right to prescribe behavior for B), (for a thorough review see Gaski, 1984). Most channel research distinguishes between coercive and non-coercive power sources (reward, referent, legitimate, expert power sources), whereas we examine the individual effects of each of the four non-coercive power sources.…”