A good guide starts with a specific question and gives the reader a clear path through it. Our editorial approach rests on four principles: relevant sources, understandable explanations, practical usefulness and responsibility for the content.
A specific question
The subject, reader and intended use shape a publication’s structure. The edition description is your reference for its topics, included materials and activities.
Sources you can find
Our selection criteria prioritize original research, literature reviews, relevant guidelines and resources from qualified institutions. Sources are considered in context: publication date, studied population, methods and limitations matter as much as the cited finding.
For further reading on health information, explore the public resources at NIH, NIMH and MedlinePlus. These are independent information resources.
From research to reading
A clear explanation distinguishes observed findings from interpretations and reflection exercises. References help you find a source, explore further and understand its context—not turn one study into a promise that applies to everyone.
Authors, contributors and reviewers
Information about the author and any professional contributions accompanies the specific edition. A researcher cited in a bibliography has a different role from someone who writes or reviews the product. Qualifications and reviews refer only to the people and work actually identified.
Editorial care and everyday use
Readability, organization, instructions and coherent activities are part of our standard. Check the edition’s product page for format, language, compatibility and included updates.
Reading with perspective
Health and psychology content is informational and educational. For personal decisions about symptoms, medication or treatment, consult a qualified professional. Do not change treatment based on a reading.
Questions and corrections
A specific question or report helps improve a publication. Contact us with the title, edition, page or section and, where available, the source to check. There is no need to send personal health information.