systems is increasingly important (Jarvenpaa, et al., 1985; Straub, 1989). An underlying tenet of IS success is the decision maker's willingness to adopt and utilize these systems. Measures that predict and explain use are important in determining what causes people to accept or reject information technology. This note reports on the test-retest reliability of the perceived usefulness and perceived ease of use scales. Davis (1989) developed and validated two scales for assessing user acceptance of information technology-perceived usefulness and perceived ease of use. Adams, et al. (1992) replicated the work of Davis (1989) to demonstrate the validity and reliability of these scales. While replicating the study, Adams, et al. (1992) also extended it to different settings and found both scales to have the same validity and reliability characteristics as the Davis (1989) study. Using two different samples, they demonstrated the internal consistency and replication reliability of the two scales.