The Sad Case of Mr. Clapgras

Dennett's imaginary Mr. Clapgras retains color naming and discrimination while emotional and attentional color responses are stipulated to reverse. The case probes the relationship between experience and dispositions, inspired by but distinct from real neuropsychological syndromes.

Mr. Clapgras is a fictional case in which ordinary color naming and discrimination remain intact while emotional and attentional responses to colors are imagined to change. Dennett uses the contrast to ask what belongs to color experience and whether supposedly intrinsic qualia can be separated from such dispositions.

The case motivates a distinction between passing one performance measure and preserving an entire experience. It is not a diagnosis of real Capgras syndrome, nor evidence that unusual beliefs are logically compelled by one missing emotional signal. Practical analogies should compare measurable dimensions without importing a fictional neurological mechanism.

When to use it

Use when studying qualia arguments or questioning whether one narrow performance measure captures an entire experiential change.

How it can help

Distinguish preserved task performance from other dimensions of experience. Keep hypothetical dissociations separate from clinical mechanisms and evidence.