As the incoming editor of College & Undergraduate Libraries, I find myself asking similar questions regarding many of the papers that I edit. The editors of the American Journal of Political Science outlines their concerns in this article in Inside Higher Education.
Our goal is to establish a standard for the information that must be made available about the research that appears in our journal. By requiring scholars to provide access to their data and conducting our own replications on those data, we confirm the rigor of, and promote public confidence in, the studies we publish. As one of the top journals in the discipline, we hope to create state-of-the-art standards that others in the field will aim to adopt.