Keeping Track of the Immediately Past States of Variables
Irwin W. Pollack, Lawrence B. Johnson · Perceptual and Motor Skills · 1964
Ss attempted to keep track of the immediately past state of 2 to 8 variables, with 2 to 8 possible states per variable. The delay between presentation and recall of information was substantially more important to this task than either the number of variables or the number of states per variable.