This study assesses the validity and reliability of the Learning Styles Preference Indicator (LSPI), an instrument developed by the author. The LSPI identifies students' preferences for analytical or global approaches to learning new and difficult material. This instrument is easy to administer, quick to score, and produces information that will help teachers understand the way their students process information. By using information from the LSPI, teachers can design more appropriate learning strategies for the benefit of each student. This article reports reliability and validity correlation scores for elementary through adult students. (Contains 2 tables.)