Published online by Cambridge University Press: 19 January 2010
To be effective, a leader must influence people to carry out requests, support proposals, and implement decisions. In large organizations, the effectiveness of most managers depends on influence over superiors and peers as well as influence over subordinates (Kotter 1985). Two types of constructs that have dominated theory and research on interpersonal influence in organizations are power and influence tactics. This chapter will explain how leaders use influence tactics to accomplish their job responsibilities and how their personal and position power can enhance their effectiveness.
Power and influence outcomes
Power has been defined in many different ways, and there is disagreement about the best way to define and measure it. In this chapter, interpersonal power means the potential influence of one person (the “agent”) over the attitudes and behavior of one or more other people (the “targets”). This definition emphasizes potential influence rather than influence behavior or outcomes and specified targets rather than general influence in the organization. It is difficult to describe the power of an agent without specifying the target person(s), the influence objectives, and the time period (Yukl 2006). An agent will have more power over some people than over others and more influence for some types of issues than for others. Furthermore, an agent's power may change over time as conditions change or the effects of an agent's decisions become evident (Hollander 1980; Pfeffer 1981).
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