The aim of this work is to understand some of the processes involved in
the selection of appropriate tasks, and in the selection of correct
responses to those tasks. The main focus will be on how interference and
conflict occurs during these processes, either at the perceptual or
action selection stages when switching task. It should be possible to
demonstrate with increases to the number of attributes, the experience
of tasks associated with non-target attributes, and in varying the
number of trials before switching tasks, that task selection consists of
several stages or processes, and that these processes do not necessarily
interact. This will show that the switch cost is not an unitary cost
associated with changing a single response-stimulus setting, task
parameter, or an overall task set, but a composite of various costs
associated with different task selection processes.