Learning strategies offer a means of addressing individual differences. A programmatic line of inquiry at two universities in the US has led to an extensive body of research related to learning strategies and to the development of two instruments. This study reports on the development of one of these instruments that can be used to quickly identify learning strategy preferences. Although this instrument, Assessing The Learning Strategies of AdultS (ATLAS), appears very simple and is easy to use, a series of multivariate statistical procedures were used to develop and validate it. These procedures are reported at the website below in detail so that practitioners can be aware of its strong research base and use it with confidence. ATLAS can be used either for self assessment or by an instructor in order to quickly identify how an individual learner approaches a learning task. Click here to access the ATLAS tool.