In its broadest sense, interpersonal power refers to any cause of any change in the behavior of one actor, B, which can be attributed to the effect of another actor, A. It sometimes refers to the capacity to cause such change (Weber [1918] 1968), sometimes to actual use of that capacity (Dahl 1957; Simon 1953) but always to overcoming the "resistance" of B (Weber [1918] 1968), hence causing B to do something B would not otherwise do (Dahl 1957). Interpersonal power is therefore the power of one individual "over" another as opposed to an individual's power to do something, the capacity of an actor to attain some goal (as in Russell 1938). "Power over" always implies a relation between two actors rather than referring to an attribute of an actor. It is sometimes thought of as "micro" power and contrasts with "power to," which is attributed to collectives (Hawley 1963; Parsons 1963) and is thought of...