...attributes, unlike the sets often presented laboratory subjects, do not occur independently of one another. Creatures with feathers are more likely also to have...sit-on-able-ness than objects with the appearance of cats. In the second place, the objects of the world are determinately structured because levels of abstraction...

...unlike the sets often presented to laboratory subjects, do not occur independently of one another. Creatures with feathers are more likely also to have...sit-on-able-ness than objects with the appearance of cats.' (Rosch, 1977: 213) Thus, prototype codings of categories will tend to occur at the level of abstraction...

...than with fur. And ... it is a fact of the perceived world that objects with the perceptual attributes of chairs are more likely to have functional sit-on-ableness than objects with the appearance of cats. In short, combinations of what we perceive as the attributes of real objects do not occur uniformly....

...programs for sitting, it is a fact of the perceived world that objects with the perceptual attributes of chairs are more likely to have functional sit-on-able-ness than objects with the appearance of cats. In short, combinations of what we perceive as the attributes of real objects do not occur uniformly....

...things." The world is structured because real-world attributes do not occur independently of each other. Creatures with feathers are more likely also to have...sit-on-ableness than objects with the appearance of cats. That is, combinations of attributes of real objects do not occur uniformly. Some pairs, triples, or...