Off-campus UMass Amherst users: To download campus access theses, please use the following link to log into our proxy server with your UMass Amherst user name and password.
Non-UMass Amherst users: Please talk to your librarian about requesting this thesis through interlibrary loan.
Theses that have an embargo placed on them will not be available to anyone until the embargo expires.
Year Degree Awarded
Bird, Learning, Psychology of Bird
Object-discrimination learning set data were obtained from 4 crows and 4- bluejays. Three of the 4- crows received $00 problems and demonstrated little or no learning set* The bluejays received 700 problems and did acquire a learning set as indicated by an average performance level of 72$ correct for Trial 2 on the last 100 problems of the experiment. Further analyses of hypothesis behavior (Levine, 1959) indicated that the crows made many errors based on position and stimulus preferences. The performance of the bluejays was characterized by consistent decreases in random responding and increases in the maximizing strategy (win-sbay~lose-shift with respect to object).