This paper describes a connectionist
implementation of the ACT-R production
system. Declarative knov^ledge is stored as
chunks in separate associative memories for
each type. Procedural knowledge consists of
the pattern of connections between the type
memories and a central memory holding the
current goal. ACT-R concepts such as adaptive
learning and activation-based retrieval and
matching naturally map into connectionist
concepts. The implementation also provides a
more precise interpretation for issues in ACT-R
such as time of memory retrieval and
production firing, retrieval errors and partial
matching. Finally, the implementation
suggests limitations on production rule structure
