Volume 14, Number 1, 2002. Contents: J.R. Lewis, Introduction. ARTICLES: D.J. Gillan, R.G. Bias, Usability Science 1: Foundation. H.R. Hartson, T.S. Andre, R.C. Williges, Criteria for Evaluating Usability Evaluation Methods. R.E. Cordes, Task Selection Bias: A Case for User-Defined Tasks. M. Hertzum, N.E. Jacobsen, The Evaluator Effect: A Chilling Fact About Usability Evaluation Methods. J.R. Lewis, Evaluation of Procedures for Adjusting Problem-Discovery Rates Estimated From Small Samples. M. Hassenzahl, The Effect of Perceived Hedonic Quality on Product Appealingness.