@proceedings {, title = {Lag as a Determinant of Human Performance in Iteractive Systems}, year = {1993}, month = {Apr 24 - Apr 29}, pages = {488-493}, chapter = {Proceedings of the INTERACT {\textquoteright}93 and CHI {\textquoteright}93 conference on Human factors in computing systems }, address = {Amsterdam, North Holland, The Netherlands}, keywords = {Other}, author = {MacKenzie, I S and Colin Ware} }