To account for differences in judgments based on the information that people receive at different points in time, Wyer and Srull (1989) postulate two storage units. One, the Work Space, is conceptually similar to working memory, and is a temporary store of both (a) the external information that enters the processing system and is comprehended at an initial stage of processing and (b) the results of goal-directed processing that occur at later stages. This material is retained in the Work Space for only a short time, however. If the goal to which it is relevant has been attained, the Work Space is cleared to make room for more immediately relevant objectives. When this occurs, any material that has not been transferred to long-term memory is lost.