This paper investigates the form, as a modern and unprecedented textua
l device, which embodies a certain combination of writing and space, p
oses certain imperative questions, and generates 'information' from th
e answers given. It offers a theoretical reflection on what kind of te
xt the form is, and a possible history of how the form has been invent
ed. It also offers an analysis of how one particular form, a Needs Ass
essment Schedule used in mental health care, embodies the complexities
of this history, and poses ambiguities and opacities for professional
s and clients using the form, or interacting with it. It also attempts
an understanding at this micro-level of analysis of how larger entiti
es, such as organizations, are constituted out of particular practices
.