Aimable Robert Jonckheere

Aimable Robert Jonckheere (25 May 1920 – 24 September 2005), commonly known by friends and colleagues as "Jonck", was a psychologist and statistician at University College London (UCL).

In this field he developed what is now known as Jonckheere's trend test, a method which is implemented in SPSS, a statistical package favoured by social scientists, and R, widely used by statisticians.

[3] He published little; however, he influenced many people's ideas and work, with traces of conversations and advice throughout UCL and beyond.

Jonckheere visited and left his mark at the International Centre for Genetic Epistemology in Geneva, where Jean Piaget forbade him from leaving unless he could find an equally able replacement.

[1] He taught a Theoretical Issues course to final year psychology students at Birkbeck College.