2014-PRESENT – Director, Weinberg Institute for Cognitive Science
2008-2010 – Associate Chair, Department of Linguistics, University of Michigan
2005-2007 – Associate Chair, Department of Linguistics, University of Michigan
2002-present – Full Professor, Department of Linguistics, University of Michigan
1997-2001 – Associate Professor, Department of Linguistics, University of Michigan
1992-1997 – Associate Professor, Linguistics Department, Harvard University
1988-1992 – Assistant Professor, Linguistics Department, Harvard University
1987-1988 – Lecturer, Linguistics Department, University of Texas at Austin
University of Michigan Service
2008 – Member, Rackham Merit Fellowship Committee
2008 – Member, University of Michigan Honorary Degree Committee
Departmental Service
University of Michigan Department of Linguistics
2012-2013 – Member, Undergraduate Committee
2012-2013 – Member, Executive Committee
2009-present – Faculty Mentor to Ezra Keshet
2010-2011 – Associate Chair & Grad Chair
2008-2010 – Associate Chair & Grad Chair
2008-2009 – Chair, Third Year Review Committee
2008 – Member, Promotion Review Committee (Psychology/Linguistics)
2008 – Chair, Tenure Review Committee
2007-2008 – Member, Graduate Committee
2006-2007 – Member, Faculty Promotion Review Committee (Psychology Department)
2005-2007 – Associate Chair & Grad Chair
2005 – Elected member, Executive Committee
2005 – Chair, Graduate Committee
2002 – Member, Tenure and Promotion committee
2001-2003 – Elected member, Executive Committee
2001 – Adjunct/Consultant, Semantics Search Committee
2001 – Adjunct/Consultant, Language Learning Research Assistant Professor Search Committee
2000-2001 – Member, Psycholinguistics Search Committee (joint Linguistics-Psychology Search) Chair, Graduate Admissions Committee.
2000 – Invited member, Program Executive Committee (co-author of second version of Linguistics Program internal review and co-author of Program response to external review)
1999-2000 – Member, Tenure and Promotion Policy Review Committee; third year reviewer for two Program faculty members
1999-2000 – Member, Graduate Admissions committee
1998-1999 – Member, Program Undergraduate committee
1997-1999 – Elected member, Executive Committee (co-author of first version of internal review of the Program in Linguistics)
1997-1998 – Member, Graduate Admissions committee
1997-1998 – Affiliate, Ad hoc Psycholinguistics search committee.
Harvard University Department of Linguistics
1994 – Member, Graduate Curriculum Committee
1994 – Member, Department Planning Committee
1992-1993 – Member, Undergraduate Curriculum Committee
1990-1991 – Head Tutor (three semesters; responsible for monitoring progress of all Linguistics majors)
1989-1994 – Member, Colloquium Committee
1988-1997 – Faculty Associate, North House