Matthew K. Nock is an American clinical psychologist, the Edgar Pierce Professor of Psychology, and the Director of the Laboratory for Clinical and Developmental Research at Harvard University (Nock Lab).

[1][2][3] Nock's research is aimed at understanding why people behave in ways that are harmful to themselves, with an emphasis on suicide and other forms of self-harm.

His research is multi-disciplinary in nature and uses a range of methodological approaches (e.g., epidemiologic surveys, laboratory-based experiments, and clinic-based studies) to better understand how these behaviors develop, how to predict them, and how to prevent their occurrence.

This work is funded by grants from the National Institutes of Health and several private foundations, has been published in over 250 scientific papers and book chapters.

He received a bachelor's degree from Boston University, two master's degrees and a PhD in psychology from Yale University, and completed a clinical psychology internship at Bellevue Hospital Center and NYU Child Study Center.