She is a native of Tuam, Co. Galway. She entered University College Dublin in 1968 and graduate in 1971 with a B.A. in Economics, Politics & Statistics, and in 1973 with an M.A. in Econometrics and Statistics. Between 1971 and 1974, she worked as a Planning Officer at the Industrial Development Authority, which spawned her interest in FDI, and subsequently as a Research Economist at the Central Bank of Ireland. Between 1974 and 1979, she undertook a MPhil and then a DPhil in Economics, at Nuffield College in Oxford. It was in Oxford that she got her first lecturing experience, teaching at Balliol College between 1975 and 1977.
Career in Higher Education
In 1977, after her MPhil, and while still studying for her DPhil, she took up a teaching post at Trinity College, Dublin, becoming a Fellow in 1985 and promoted to Associate Professor in 1991.. She was Bursar of Trinity College between 1991 and 1995 and Head of the Economics Department 1997-2000, the first female to have the role since the foundation of the Department. She was Editor of the Economic and Social Review between 1981 and 1984 and was Research Director of the Foundation for Fiscal Studies between 1989 and 1996. Between 1998 and 2004, she served as Vice-President, President and Vice-President of the Irish Economics Association. In 2001, she ran unsuccessfully, as a candidate for Provost of Trinity College, an event later described by Prof Jane Ohlmeyer as important for encouraging women to take on leadership roles in the Irish public service, creating "a crack in the glass ceiling". In 2003, she was made a member of the Royal Irish Academy. In 2002, together with other economists, she warned against "Benchmarking" pay increases proposed for Ireland's public sector. This prediction of significant economic costs was largely borne out following the end of Ireland's Celtic Tiger bubble, as the government was faced with a very large current spending deficit, following its permanent spending commitments on the back of temporary taxation revenues. Her interest in public policy led to the publication of "Governance and Policy Making in Ireland", co-edited with Donal de Buitléir, in 2003 and "Using Evidence to Inform Policy", co-edited with Pete Lunn, in 2013. Her principal academic research interests relate to FDI. Through her research, Ruane has contributed to the understanding of international economics, industrial development, structural change, and firm heterogeneity. For her academic research and public service, she was recognised with an Honorary Fellowship by Trinity College Dublin in 2010 and was invited to give the 21st Leonard Abrahamson Memorial Lecture by the Royal College of Surgeons in Ireland in 2011. She served as a member of the Council of the Royal Irish Academy between 2012 and 2015.