{"pk":4966,"title":"Sameness-difference Judgments of Numerousness by Monkeys: \nMacaca mulatta\n and \nMacaca assamensis","subtitle":null,"abstract":"Three of four monkeys were trained successfully on a series of number-related judgment problems ending with \"same\" and \"different\" judgments involving pairs of numerousness discriminanda. The discriminanda were black \"dots\" drawn on cards and constructed using controls to preclude the use of cumulative area or brightness cues and to make specific pattern memorization unlikely. On the final task, all possible same and different pairs of discriminanda representing the numbers 2 through 6 were used, and three monkeys met criterion (two successive sessions of 80% or more correct) in 80, 160, and 200 trials, respectively. Discussion considered possible underlying processes to explain the numerousness judgments as well as the implications of the present work for Piaget's views on conservation of quantity.","language":"en","license":{"name":"Creative Commons Attribution 4.0","short_name":"CC BY 4.0","text":"Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.\r\n\r\nNo additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.","url":"https://creativecommons.org/licenses/by/4.0"},"keywords":[{"word":"International Journal of Comparative Psychology"},{"word":"Behavior"},{"word":"Behaviour"},{"word":"learning"},{"word":"Behavioral Taxonomy"},{"word":"cognition"},{"word":"Cognitive Processes"},{"word":"Conditioning"},{"word":"Intelligence"},{"word":"Sameness-difference"},{"word":"Judgment"},{"word":"Numerousness"},{"word":"primate"},{"word":"Monkey"}],"section":"Research Article","is_remote":true,"remote_url":"https://escholarship.org/uc/item/7zk0d273","frozenauthors":[{"first_name":"Guobin","middle_name":"","last_name":"Lin","name_suffix":"","institution":"The Chinese Academy of Sciences","department":"None"},{"first_name":"Yanling","middle_name":"","last_name":"Wang","name_suffix":"","institution":"Beijing University","department":"None"},{"first_name":"Hua","middle_name":"","last_name":"Yang","name_suffix":"","institution":"Beijing University","department":"None"}],"date_submitted":"2009-06-03T21:28:53Z","date_accepted":"2009-06-03T21:28:53Z","date_published":"2012-03-28T22:30:37Z","render_galley":null,"galleys":[{"label":"","type":"","path":"https://journalpub.escholarship.org/uclapsych_ijcp/article/4966/galley/2853/download/"}]}