The present book is an attempt to investigate on two important aspects of critical thinking i.e. critical reading and critical writing in the field of English language learning. These two significant skills have been studied through the use of research articles as one of the sources of knowledge in higher education. The Critical Reading and Critical Writing of Research Article's questionnaire, and also the strategy inventory developed are applicable to students of higher education and those interested in assessing and developing critical reading and writing skills. They could be considered as two significant contributions of this study.