There is no four-object limit on attention

The complex relationship between attention and STM forms a core issue in di e study of human cognition, and Cowan's target article attempts, quite succ essfully, to elucidate an important part of this relationship. However, whi le I agree that aspects of STM performance may reflect the action mechanism s that we normally consider to subserve "attention" I shall argue here that attention is not subject to a fixed four-object capacity limit as Cowan su ggests. Rather, performance in attention tasks as well as STM may be best a ccounted for in terms of decay and interference.