This article was published in the North American genealogical magazine “Your Genealogy Today”, in the January/February 2018 edition. My article, “Avoid Common Mistakes”, is about preventing research errors by using the guidelines of the Genealogical Proof Standard.As outlined in the Genealogy Standards by the Board for Certification of Genealogists, the Genealogical Proof Standard consists of five elements: 1. A reasonably exhaustive search for all pertinent information 2. A complete and accurate citation to the source of each item used 3. Analysis of the collected information’s quality as evidence 4. Resolution of any conflicting or contradictory evidence 5. Arrive at a soundly reasoned, coherently written conclusion A genealogical conclusion that meets these standards can be considered proved.