•Main points
–Categories have shared
properties
–Basic categories are
where most of these first appear.
•Experiments
1.Collect
attribute lists.
•Example: # common
attributes for fruit: superordinate – 3, basic
– 8.3, subordinate – 9.5
2.Document
actions with objects.
•Similar pattern of
attributes.
3.Similarity
of shape.
4.Average
shape.
•Basic categories have
similar shape; no evidence subordinates
are less similar.