Match theories of categorisation to phenomena that present challenges for them. Drag and drop options on the right-hand side and submit. For keyboard navigation: -Navigate options with the up/down arrow keys - Hit enter or space to grab an option - With option grabbed, hit enter or space to drop it into position - Hit esc to deselect an option SHOW LESS A People can learn things like "Members of category X are t kilo or 10 kilos while members of category Y are 5.5 kilos? and generalise accordingly..