  Unlike Russell, who did not elaborate greatly on these matters, Broad went on provide quite detailed analyses of the structure of temporal consciousness. The account developed in Scientific Thought is of a distinctive kind. It is constructed around acts of awareness that are themselves momentary, but which apprehend phenomenal contents distributed over a short interval of time; a stream of consciousness consists of dense sequences of such acts, with the consequence that the contents apprehended by neighbouring acts largely overlap. Since Broad agrees with Stern that our consciousness extends a short distance through time his approach can be classed as Extensional. But since Broad also maintains – along with Brentano, Meinong and Husserl – that our immediate experience of change involves contents being presented to acts of awareness that are strictly momentary, it is not an Extensional view of the ordinary sort: for Stern and those in the Extensional camp, the acts of awareness (or episodes of experiencing) in which dynamic contents are apprehended are themselves temporally extended. For this reason Broad’s position is probably best classed as a Partial Extensionalism. In any event, this hybrid approach is not without its difficulties – see Mabbott (1951) – and in his later An Examination of McTaggart’s Philosophy (1938) Broad develops an account along more orthodox Retentionalist lines.