Search the list Add your own study to the list Web-Lab Publications archived Cognitve Psychology :: 17. 04. 2005 :: :: Ball Weighing Experiment   Frederic Dandurand McGill University   The task is a fun brain teaser that consists in finding, with three uses of a scale, the one ball that is either heavier or lighter than the rest of a set of 12 balls. The purpose of the study is to better understand how people learn to solve planning-intensive tasks.     1 2 3 4 5 6