| affordances | Uses of an object, governed by the object's structural characteristics.
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| agnosias | Neurological conditions in which people cannot recognize objects; depending on the sense involved, an agnosia is said to be visual, auditory, or tactile. See prosopagnosia.
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| alexia | An acquired disorder, usually consequent to brain damage, involving an inability to read despite normal vision; often accompanied by normal ability to write.
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| categorization | The ability to place different objects into groups based on common features or common properties among those objects.
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| change blindness | Failure to notice an otherwise conspicuous change because of the diversion of attention. See inattentional blindness.
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| configural processing | Integration of various object features into a comprehensive, global configuration. See featural processing.
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| face-inversion effect | Difficulty recognizing distortions in features of a face viewed upside-down, distortions readily perceived when the face is viewed upright.
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| featural processing | Ability to perceive individual components, or features, of an object without being able to integrate those components into a global form. See configural processing.
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| geons | In one theory of visual recognition, the geometric elements into which seen objects are decomposed. The term is short for geometrical icons.
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| identification | The cognitive process of distinguishing a particular object. Contrast with categorization.
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| inattentional blindness | Impairment in perceiving the appearance of or changes to unattended objects. See change blindness.
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| object-based attention | The view that attention is always directed at objects, not spatial locations.
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| prosopagnosia | An inability to recognize faces. See bgagnosias.
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| recognition by components | The theory that any view of an object can be represented as an arrangement of just a few, simple three-dimensional forms. See geons.
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| view-based recognition | The theory that recognition of object depends upon multiple, stored views of that object.
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| word superiority effect | The finding that, under some conditions, an entire word may be read more rapidly (or be seen more easily) than just one of the word's letters.
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