Binding Costs in Processing Efficiency as Determinants of Cognitive Ability

The aim of this study was to replicate and extend previous research addressing the task complexity moderation of the relationship of mental speed with cognitive ability. Using a well-defined theoretical binding framework, we intended to offer a more meaningful account of “task complexity”. We conclude that binding requirements and, therefore, demands on working memory capacity offer a satisfactory account of task complexity that accounts for a large portion of individual differences in ability.