Hedwig von Restorff
German psychiatrist and paediatrician (1906 to 1962) whose 1933 experiments showed that the odd item in a list of similar items is remembered better.
Who they are
Von Restorff worked in the Gestalt tradition in Berlin, and her 1933 paper in Psychologische Forschung lists the Psychologisches Institut der Universität Berlin. The Choice Factory notes that her academic career ended with the Nazi purge of the Berlin psychology institute.
Her paper was written in German and has never been published in English; it is known in detail through R. Reed Hunt's 1995 account. Fifteen volunteers studied ten-item lists, read prose for ten minutes and then recalled what they could. An isolated item, such as a number among syllables, was recalled by 70 per cent, against 40 per cent for the same kind of item in a control list where every item differed from the others. She placed the odd item second or third, before it could look unusual, and it was still better remembered. Her reading, which Hunt endorses, is that the effect depends on the surrounding items being alike, not on difference alone.
Key papers
von Restorff, H. (1933). "Über die Wirkung von Bereichsbildungen im Spurenfeld." Psychologische Forschung, 18(1), 299-342. doi:10.1007/BF02409636.
Key ideas
Sources
- von Restorff (1933), German abstract read on the Springer page, 12 October 2026; the paper itself read through Hunt (1995), full text read, 12 October 2026.
- Shotton, R. (2018), The Choice Factory, Bias 4, pp. 27 to 28, read in full by this publication.