This paper begins by analysing the nature of cognition and of motivation, e
specially as they relate to the operation of the subconscious. The interdep
endence of cognition and motivation is demonstrated. This interdependence i
s then illustrated through an analysis of studies on goal setting and task
strategies (task knowledge) in relation to task performance. Three types of
relationships have been found: direct, separate effects of goals and strat
egies; interactions between goals and strategies (moderation); and the medi
ation of goal effects by strategies. It is argued that there is really one
underlying model that accounts for all of these findings. There are two pat
hs to performance, one motivated by goals and another motivated by other fa
ctors. Each is or can be associated with relevant task knowledge. "Direct"
goal effects occur when the subjects already possess relevant task knowledg
e, but that knowledge is not measured. (If it were measured, there would be
mediation.) Direct strategy effects occur when subjects are motivated to d
iscover or use relevant strategies by (unmeasured) motives that are not a p
roduct of the performance goal. Moderation occurs when there is no task kno
wledge tied to the goals but knowledge derives from other sources, which co
mbines with goals to produce performance. Mediation occurs when goals produ
ce measured task knowledge, which, when controlled, vitiates the goal effec
t. This model suggests ideas for further research.