general or unspecified; prefer specifics; research as a field or the progress or status of research in a particular field; do not add routinely for specific studies involving "research"

Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)