Predatory aggression and irritable aggression: shock-induced fighting in mouse-killing rats

Two experiments were conducted to assess shock-induced aggressive behavior in mouse-killing and nonkilling rats. The purpose of this research was to determine whether the different types of aggressive behavior covary, or whether they are unrelated. At both 2-mA and 1-mA shock intensities the killing and nonkilling rats did not differ with respect to shock-induced fighting.