INTRODUCTION The individual and social costs associated with violence, and the consequent desire to understand and reduce aggressive behavior, have made aggression a popular area of scientiﬁc research. Experimental designs are an excellent means to control extraneous and confounding variables, and thus have the potential to allow research with a high degree of internal validity. In addition, experimental methodologies allow for the testing of causal hypotheses. Accordingly, researchers have developed behavioral analogs to experimentally examine various correlates of aggressive behavior under controlled, laboratory conditions. Of these measures, the most well known are the Buss Aggression Machine (BAM) (1), the Point Subtraction Aggression Paradigm (PSAP) (2), and the Taylor Aggression Paradigm (TAP) (3). Over the past 40 years, these measures have generated a
great deal of knowledge about aggression and have been both praised (4) and criticized (5) for their effect on the development of the aggression research ﬁeld. The present chapter will discuss the utility of laboratory measures of aggression, focusing on the Taylor Aggression Paradigm (TAP).