In a first-of-its-kind finding, researchers at University of Iowa Health Care discovered that specific genetic sequences have an outsized impact on humans' language abilities and that these sequences evolved before humans and Neanderthals diverged.
The study's senior author, Jacob Michaelson, Ph.D., Roy J. Carver Professor of Psychiatry and Neuroscience with the UI Roy J. and Lucille A. Carver College of Medicine, describes language as a defining trait of Homo sapiens. While other animals communicate in various ways, humans' propensity for developing and improvising language is unique to Earth's dominant species.