The Effect of Benzedrine Sulfate (Benzyl Methyl Carbinamine) Upon the Report of Boredom and Other Factors

The present study was designed to examine the effects of letter frequency and organizational pattern on the short-term retention of letter stimuli. A total of 60 Ss were tested individually in a two-by-four mixed analysis-of-variance design with two levels of digram-letter frequency (high and low) and four levels of organizational pattern (12 lines with one letter per line, six lines with two letters per line, four lines with three letters per line, and one line with 12 letters per line). The results showed that both main effects and the interaction term are significant and can be interpreted in terms of Miller's “chunking” model of information storage and retrieval.