Grey parrots cognition and perception Venue: Sala conferenze affrescata, 1° floor, Palazzo Fedrigotti, Rovereto 19th March 2014 at 10.00 am prof. Irene Maxine Pepperberg, Research Associate, Dept. of Psychology, Harvard University Abstract: Grey parrot abilities for visual inferential reasoning by exclusion were tested in two experiments. The first replicated a study of Mikolasch et al. (2011), which in turn replicated that of Premack and Premack (1994) with apes, to learn if our subjects could succeed on this task. Here parrots watched an experimenter hide two equally desirable foods under two separate opaque cups, surreptitiously remove and then, in view of the birds, pocket/eat one of the foods, leaving birds to find the still baited cup. The experiment contained controls for various alternative explanations for the birds’ behavior, but birds might still have avoided a cup from which something had been removed rather than specifically tracking the eaten food. Thus, in the second experiment, some trials were run with one food slightly more preferred than the other, during which two items of each type were hidden and only one of the items were removed from one cup. Sessions also included Experiment 1-type trials to see if birds tracked when and when not to use exclusion. Thus birds would be rewarded for attending closely to all the experimental aspects needed to infer how to receive their preferred treat. Three of four birds succeeded fully. If time permits, data will also being presented showing how one Grey parrot, Griffin, can infer the labels of shapes in drawings of occluded and Kanizsa figures after being trained to identify real object figures (polygons of wood, flannel, plastic and paper). PREMESOR ERC project seminar
Posted on: Tue, 18 Mar 2014 16:59:58 +0000
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