What is dissociation, which Raeesah Khan says she suffers from, and what causes it?

Dissociation is a common defence mechanism for people under immense stress, experts say. PHOTO: ISTOCKPHOTO
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SINGAPORE - Dissociation, a mental phenomenon in which a person detaches from reality, is so common that experts say at least half of the population might have experienced it at some point.

The term has surfaced in a recent hearing of a parliamentary committee looking into the conduct of former Workers' Party MP Raeesah Khan, as a possible explanation for why she might have reported conversations differently from her colleagues' accounts of the same event.

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