IV.  Attention

    A.  Attentional Limitations

       1.  Two Tasks:  Divided & Focused Attention

       2.  Some Preliminary Evidence

    B.  Filter Models of Attention

       1.  Pre-Categorical Filters

            a.  Broadbent

            b.  Treisman

       2.  Response-Based Filters

            a.  The Deutsch-Norman Model

            b.  Johnston & Heinz

    C.  Capacity Models of Attention

       1.  Kahneman: Centralized Pool

       2.  Dedicated Pools:  Segal & Fusella

     D.  Attention & Automaticity

        1.  Practice Effects

        2.  Schneider & Shiffrin's Dual-Process Theory

            a.  Control versus Automatic Process

            b.  The Search Task

            c.  Automaticity & Attention

                   i.  Primary-Secondary Task Methods

                   ii.  Posner et al.

        3.  Logan's (Multi-Trace) Race Model

            a.  Three Assumptions

                   i.  Obligatory Encoding

                   ii.  Obligatory Retrieval

                   ii.  Instance Representation

            b.  Two Processes

                   i.  Computation

                   ii.  Retrieval