Self-report survey-based data collection is increasingly carried out using the Internet, as opposed to the traditional paper-and-pencil method. However, previous research on the equivalence of these methods has yielded inconsistent findings. This may be due to methodological and statistical issues present in much of the literature, such as…

Reliability and construct validity of observer ratings on the Revised NEO Personality Inventory (NEO PI-R) were evaluated in a sample of 101 college students and the observations of 2 people who knew each student. Results document the strong internal consistency of each scale and a factor structure replicating previous findings. (SLD)