Exploring how critical thinking is expressed in writing, this book investigates the specific linguistic elements involved in this process. Ian Bruce takes a genre-based approach to compare the textual expression of critical thinking in samples of academic, professional and journalistic writing, using five studies to examine the similarities and differences in the elements deployed across different genres. Looking at phenomena such as the relations between propositions and words which express the writer's personal attitude, content-organizing patterns, and the role of metaphor, this book highlights the most important contributory factors in the expression of critical thinking. Providing an in-depth exploration of how it is articulated through different types of specialist writing, this book provides a lens to both examine texts and to identify and practice this skill.