A relationship where the parties identify with one another becomes particularly strong as the parties' roles are defined with reference to one another,
evoking a high degree of jointness.
Moreover, the emulation of the other's behavior and opinion obviously benefits the other,
who is allowed to set the pace and direction for the exchange. On a general level, attraction has been highlighted as a highly effective means of influencing the decisions and orientations of other individuals (Cialdini, 1995; Walster & Abrahams, 1972).