An exploratory study into the bias associated with faculty self-reporting of time and effort is reported. The paper delves into the question of whether or not there is bias in faculty reports of time and effort and whether a pattern to any such bias might appear. The methodology for conducting the study involved gathering faculty estimates of time/effort using both questionnaire and diary instruments. A method for determining and quantifying bias was established and used in gathering data. Based upon the results of statistical treatments applied to the data, some observations and conclusions were made concerning the presence of bias in faculty time/effort reports. It was concluded that a diary is superior to a questionnaire for self-reporting of time/effort because no reliance need be placed on memory or on an individual's ability to estimate average time expenditure. (Author/KM)