[2] He received his BA from Oberlin College and his PhD in Philosophy from UMass Amherst in 1990.
[1] In 2017[8] he co-founded of the Yerevan Academy for Linguistics and Philosophy (YALP), an annual intensive summer school of analytic philosophy and theoretical linguistics hosted by the American University of Armenia.
He began it with Daniel Altshuler, Susanna Melkonian-Altshuler and Arshak Balayan.
[11] In 2019 Markosian was among the panelists at an American Philosophical Association meeting on how to diversify philosophy departments.
[12] In 2019 Markosian, along with dozens of other philosophers, signed a list of proposals for what individual philosophers and departments can do to prevent harassment and support victims of sexual harassment in academia.