1. Baddeley, A. D. Short-term memory for word sequences as a function of acoustic, semantic and formal similarity. Quart. J. exp. Psychol., in press.
2. Baddeley, A.D., & Dale, H C. A. The effect of semantic similarity on retroactive interference in long- and short-term memory. J. verbal Learn. verbal Behav., in press.
3. Conrad, R., & Hull, A. J. Information, acoustic confusion, and memory span. Brit. J. Psychol., 1964, 55, 429–432.
4. Dale, H. C. A. Retroactive interference in short-term memory. Nature, 1964, 203, 1408.
5. Wickelgren, W. A. Acoustic similarity and intrusion errors in short-term memory. J. exp. Psychol., 1965, 70, 102–108.