1. Functional fixedness as related to problem solving;Adamson;Journal of Experimental Psychology,1952
2. Elation, depression and helping behavior;Aderman;Journal of Personality and Social Psychology,1972
3. Observational set, empathy, and helping;Aderman;Journal of Personality and Social Psychology,1970
4. The architecture of cognition.;Anderson,1983
5. Human associative memory.;Anderson,1973