1. The formation of learning sets;Harlow;Psychological Review,1949
2. Analysis of discrimination learning by monkeys;Harlow;Journal of Experimental Psychology,1950
3. Learning set and error factor theory;Harlow,1959
4. Discrimination-reversal learning skills of rhesus monkeys (Macaca mulatta);Pieper,1972
5. The Transfer Index: an alternate measure of learning set;Rumbaugh,1969