Matilda effect
Mary Whiton Calkins (1863–1930) – Harvard University Discovered that stimuli that were given to a test subject at the same time as other stimuli would be easier for that person or animal to remember. She also found that subjects remembered things better if they saw or otherwise experienced them for a longer time. Georg Elias Müller and Edward B. Titchener used Calkins' research findings for their own work without giving her any credit.