Edwin Dalmaijer


Dr. Dalmaijer is a cognitive neuroscientist who revolutionized eye tracking with his PyGaze toolbox. This open source eye tracking software has made eye tracking affordable for nearly any research laboratory. Although Edwin’s software can be used to interface with expensive (>$30k) eye trackers, it also wraps around the APIs of cheap, consumer-grade eye trackers intended for gamers. As Dr. Dalmaijer has shown in his careful testing, these cheap eye trackers are sufficient for many research applications. PyGaze has allowed the PEEP lab to send eye trackers all over the US to collaborating labs and even a psychiatric hospital. 

Dr. Dalmaijer designed our gaze-contingent operant conditioning study and recently presented the work at the European Conference on Eye Movements. You can find his invaluable book on programming in Python for psychologists here, which is a must-read for any graduate student or advanced undergraduate in psychology.

Samantha Dawson


Dr. Dawson is an Assistant Professor in the Department of Psychology at the University of British Columbia, and she is an expert on sexual dysfunctions in individuals and in couples. Dr. Dawson has conducted pioneering research using eye tracking to measure sexual interest and arousal. Dr. Dawson and Dr. Armstrong are co-advising Zoe Brown’s thesis project on the role of disgust in sexual dysfunction.

Shari Steinman


Dr. Steinman is a clinical psychologist who studies anxiety-related disorders and OCD. She and Dr. Armstrong recently finished data collection on a study examining oculomotor avoidance of spiders, which is part of an ongoing eye tracking collaboration.

Jeremy Stewart


Dr. Stewart is a clinical psychologist who studies suicide and self-injurious behaviors in youth. He and Dr. Armstrong successfully applied for a small grant from Canada’s Social Science and Humanities Research Council to create an eye tracking station in Dr. Stewart’s lab. PEEP lab member Siri Danielson worked with Dr. Stewart during the summer of 2019 on a project using eye tracking to assess risk factors for suicide. Some of the data are reported in this paper.

Matthew Morris


Dr. Morris conducts transdiagnostic research on stress and pain disorders, with a focus on racial disparities in  mental health. He and Dr. Armstrong are conducting eye-tracking research on the nature of racial differences in disgust sensitivity and contamination-based OCD. They are also conducting research on attentional biases in PTSD and chronic pain disorders. In 2017, Mira Engel, a PEEP lab member, spent a summer in Dr. Morris’s lab conducting research and learning pain asessment methodology. The data is reported in this manuscript.

Kean Hsu


Dr. Hsu is Assistant Professor in the Department of Psychiatry at Georgetown University. He studies the role of basic cognitive processes in depression and anxiety, with a focus on measurement. He and Dr. Armstrong recently finished a paper on the measurement of disgust.

Bunmi Olatunji


Dr. Armstrong completed his supervision under the excellent mentorship of Dr. Olatunji. He and Dr. Armstrong continue to collaborate and recently conducted a meta-analysis of over 100 studies examining the role of disgust in anxiety-related disorders.

Previous Collaborators

Michael Treadway


Dr. Treadway is a clinical psychologist and neuroscientist studying the roles of decision making and dopamine in depression. In 2016, PEEP lab member Anneka Soenstram spent a summer learning neuroimaging methods in Dr. Treadway’s laboratory and then conducted her thesis research in the PEEP lab exploring spontaneous blink rate (measured by an eye tracker) as a proxy for striatal dopamine. PEEP lab members also used Dr. Treadway’s EEfRT task, in conjunction with eye tracking, to parse components of reward processing.