A human editor uses a document editing system to edit a draft document. The editor's editing behavior is monitored and logged. Statistics are developed from the log to produce an assessment of the editor's productivity. This assessment, in combination with assessments of other editors, may be used to develop behavioral metrics which indicate correlations between editing behaviors and productivity. The behavioral metrics may be used to identify including the relative contribution to efficient editing of different editing behaviors. Such information about individual editing behaviors may be used to evaluate the productivity of individual editors based on their editing behaviors, to identify behaviors which individual editors could adopt to improve their productivities, and to identify changes to the editing system itself for improving editor productivity. An editor's editing behavior may be “played back” and observed by a human in an attempt to identify the causes of the editor's poor productivity.