Metacognition's roles in self-regulation of cognitive tactics and stra
tegies is explored in relation to five sites where individual differen
ce factors are likely to be observed and affect performance: domain kn
owledge, knowledge of tactics and strategies, performance of tactics a
nd strategies, regulation of tactics and strategies, and global dispos
itions. Though the current literature is sparse, tentative hypotheses
about kinds of individual differences and their impact are proposed. D
irections for future research are noted concerning the need for more s
ophisticated metacognitively-based models of SRL as a complex collecti
on of individual differences, and some suggestions are made about meth
odologies for investigating complex, metacognitively regulated approac
hes to learning.