Twenty mentally retarded children (mean age 10 years) and 40 nonretarded children (grades 2 and 5) learned pairs of pictures in a single-function order (terms of each pair were in the same position throughout) or in a double-function order (all items were re-paired). (Author)

Two experiments tested what happens to learning performance as serial location of a word list is removed as a consistent source of associations across trials. Serial recall produced a stable level of performance and little learning. Serial recall learning may require certain memory factors in combination. (CHK)

Subjects learned one, two, or three verbal lists simultaneously. Recall of the common list after 24 hours increased directly as the number of lists learned simultaneously increased. Assuming that simultaneous learning reduced interference, the interference was from extraexperimental sources of a proactive nature. (Author/CP)

RESEARCH ON SEQUENCING OF INSTRUCTION CAN BE DIVIDED INTO NINE TYPES ACCORDING TO DIFFERENT DIMENSIONS ON WHICH THE EXPERIMENTS VARY. SITUATIONS IN WHICH THE LEARNER CONTROLS THE OBJECTIVES ARE DIFFICULT TO EVALUATE EXPLICITLY BECAUSE OF DIFFERING CONTENT LEARNED. AMONG EXPERIMENTER-CONTROLLED LEARNING SITUATIONS, THE WORK OF GAGNE AND HIS…

THREE- AND 4-YEAR-OLDS WERE GIVEN VERBAL LEARNING PRETRAINING TO DETERMINE ITS EFFECT UPON THE PERFORMANCE OF REVERSAL AND NONREVERSAL SHIFT DISCRIMINATION TASKS. THE EXPERIMENTAL TASK WAS THE CLASSICAL REVERSAL-NONREVERSAL SHIFT PARADIGM. THE 96 PRE-SCHOOLERS, PRIMARILY FROM THE PENNSYLVANIA STATE UNIVERSITY NURSERY SCHOOL, WERE DIVIDED INTO 4…