This study investigated performance differences between three different web-based navigation models: linear, persistent, and semi-persistent menu structures. Forty-four college students were placed into one of the three navigation conditions and completed information-finding tasks. No significant differences were found among the models with respect to success in completing tasks or overall completion time. Use of other navigation aids built into the browser such as the HOME and BACK buttons was also measured, as well user satisfaction and perceived usability. No differences among models were found here either. Results of this study tentatively indicate that the three navigation models, as tested, performed equally well and further that designers should perhaps give fair consideration to each of the models pending the purpose and audience of the site being designed. (2001-08-05)