This popular text is a true introduction to qualitative research, leading the new researcher into the field by explaining the core concepts through theory, research, and applied examples. Woven into the chapters are three themes that are the heart of the book: First, research is about learning; second, research can and should be useful; and finally, a researcher should practice the highest ethical standards to ensure that a study is trustworthy.&nbsp;The&nbsp;<strong>Fourth Edition</strong>of <strong><em>An Introduction to Qualitative Research: Learning in the Field&nbsp;</em></strong>includes a much expanded discussion of ethics&nbsp;<em></em>and ethical research practice, as well as an elaborate discussion of systematic inquiry—both leading to the central consideration of trustworthiness<em>&nbsp;</em>in research. Expanded discussion on the various genres in qualitative research includes more on oral history interviews and autoethnography. Gretchen B. Rossman and Sharon F. Rallis provide a more nuanced discussion of conceptualizing<em>&nbsp;</em>and developing a conceptual framework, as their own insights into the virtues of early development of this thinking have grown. The discussion of data analysis and interpretation is also expanded, and there are more international examples.<br><br>