 Aside from the formal and usually explicitly stated, or defined, tasks and rules, there is an important implicit and informal dimension of an institution roughly describable as institutional culture. This notion comprises the informal attitudes, values, norms, and the ethos or “spirit” which pervades an institution. As such, it is to be distinguished from the wider notions of culture frequently in use among anthropologists. Culture in the wide sense embraces not only informal but also formal elements of institutions, e.g. rules and other components of structure (Tylor 1871; Munch and Smelser 1993)). Culture in the narrow sense influences much of the activity of the members of that institution, or at least the manner in which that activity is undertaken. So while the explicitly determined rules and tasks might say nothing about being secretive or “sticking by one’s mates come what may” or having a hostile or negative attitude to particular social groups, these attitudes and practices might in fact be pervasive; they might be part of the culture (Skolnick 2008). 