This project investigated how academic users search for information on their real-life research tasks. This article presents the findings of the first of two studies. The study data were collected in the Queensland University of Technology (QUT) in Brisbane, Australia. Eleven PhD students' searching behaviors on personal research topics were observed as they interacted with information retrieval (IR) systems. The analysis of search logs uncovered the characteristics of research tasks and the corresponding search strategies. (Contains 2 tables and 3 figures.)