Table 1. Examples of stimuli and semantic features used for birds, clothing and vegetable categories.

Bird	Typical	Atypical
Examples:	Robin, Sparrow, Wren	Ostrich, Penguin, Vulture
Core features	Lays eggs, has wings, has beak
Prototype features	Small, hops, flies, lives in trees
Distinctive features		Long legs, webbed feet, long neck
Clothing	Typical	Atypical
Examples:	Shirt, Suit, Blouse	Apron, Suspenders, Bib
Core features	Worn on body, made of fabric
Prototype features	Has buttons, zippers
Distinctive features		Decorative accessory, protective covering
Vegetable	Typical	Atypical
Examples:	Cucumber, Carrot, Radish	Garlic, Pumpkin, Parsley
Core features	Found in grocery store, nutritious
Prototype features	Eaten fresh, put in salad
Distinctive features		Eaten cooked, strong smell