This appendix includes seven papers which focus on various aspects of the learning processes of children ages 5-7: (1) S. Thompson, "Transitions to concrete operations: A survey of Piaget's writings" (in outline form); (2) S. H. White, "Changes in learning processes in the late preschool years," an examination of cross-cultural evidence of significant physiological and behavioral changes in children; (3) C. M. Super, "Cognitive changes during the late preschool years: Non-Western evidence for universality," a study in which 13 "culture free" developmentally sensitive tasks were administered to urban and rural Zambian children; (4) C. E. Gunnoe, "The correlation between some measures of neurological and cognitive development in the child"; (5) S. W. White and R. S. Mansfield,"Effects of visual noise on problem solving estimated by an ascending method of limits"; a study which made use of an evolving two-choice discrimination task; (6) R. S. Mansfield, "Developmental trends in the effects of noise on problem solving"; and (7) M. F. Elias, "Three indicators of children's development ability to recognize and solve complex problems," a study which related the ability to hold a labile state to cognitive activity and age. (ED)