Although problems with emotional functioning are considered central to borderline personality disorder (BPD), it is only recently that studies have begun utilizing laboratory biobehavioral measures (including neuroimaging and psychophysiological measures) to examine emotional responding in BPD. The application of basic science methodologies used in a systematic program of research to investigate clinically relevant phenomena, often called translational research, holds much promise in advancing the assessment and treatment of BPD. In this paper, we begin with an overview of the research on self-reported emotional responding in BPD. Next, we outline the advantages that translational research has over traditional self-report methodology in furthering an understanding of emotional responding in BPD, and review the extant laboratory studies of emotional responding in BPD. Finally, problems commonly encountered when conducting translational research on emotion in BPD are outlined, and solutions to these problems are offered.