Richard Snow's research influenced many students and colleagues, both directly through his findings and indirectly by inspiring others to carry on the work. A cross-section of his influence is represented in this special issue. The articles present sever

Susanne P. Lajoie, Patrick C. Kyllonen

Volume 38, Number 2, 2003Contents: L. Corno, P.H. Winne, Editors' Statement. P.C. Kyllonen, S.P. Lajoie, Reassessing Aptitude: Introduction to a Special Issue in Honor of Richard E. Snow. P.L. Ackerman, Aptitude Complexes and Trait Complexes. D.J. Woltz, Implicit Cognitive Processes as Aptitudes for Learning. V. Shute, B. Towle, Adaptive E-Learning. S.P. Lajoie, Individual Differences in Spatial Ability: Developing Technologies to Increase Strategy Awareness and Skills.