Monkeys match and tally quantities across senses. Jordan, K. E, Maclean, E. L, & Brannon, E. M Cognition, 108(3):617-25, 2008. doi abstract bibtex We report here that monkeys can actively match the number of sounds they hear to the number of shapes they see and present the first evidence that monkeys sum over sounds and sights. In Experiment 1, two monkeys were trained to choose a simultaneous array of 1-9 squares that numerically matched a sample sequence of shapes or sounds. Monkeys numerically matched across (audio-visual) and within (visual-visual) modalities with equal accuracy and transferred to novel numerical values. In Experiment 2, monkeys presented with sample sequences of randomly ordered shapes or tones were able to choose an array of 2-9 squares that was the numerical sum of the shapes and sounds in the sample sequence. In both experiments, accuracy and reaction time depended on the ratio between the correct numerical match and incorrect choice. These findings suggest monkeys and humans share an abstract numerical code that can be divorced from the modality in which stimuli are first experienced.
@Article{Jordan2008,
author = {Kerry E Jordan and Evan L Maclean and Elizabeth M Brannon},
journal = {Cognition},
title = {Monkeys match and tally quantities across senses.},
year = {2008},
number = {3},
pages = {617-25},
volume = {108},
abstract = {We report here that monkeys can actively match the number of sounds
they hear to the number of shapes they see and present the first
evidence that monkeys sum over sounds and sights. In Experiment 1,
two monkeys were trained to choose a simultaneous array of 1-9 squares
that numerically matched a sample sequence of shapes or sounds. Monkeys
numerically matched across (audio-visual) and within (visual-visual)
modalities with equal accuracy and transferred to novel numerical
values. In Experiment 2, monkeys presented with sample sequences
of randomly ordered shapes or tones were able to choose an array
of 2-9 squares that was the numerical sum of the shapes and sounds
in the sample sequence. In both experiments, accuracy and reaction
time depended on the ratio between the correct numerical match and
incorrect choice. These findings suggest monkeys and humans share
an abstract numerical code that can be divorced from the modality
in which stimuli are first experienced.},
doi = {10.1016/j.cognition.2008.05.006},
keywords = {18571636},
}
Downloads: 0
{"_id":"2MemPc9MZn689gC46","bibbaseid":"jordan-maclean-brannon-monkeysmatchandtallyquantitiesacrosssenses-2008","author_short":["Jordan, K. E","Maclean, E. L","Brannon, E. M"],"bibdata":{"bibtype":"article","type":"article","author":[{"firstnames":["Kerry","E"],"propositions":[],"lastnames":["Jordan"],"suffixes":[]},{"firstnames":["Evan","L"],"propositions":[],"lastnames":["Maclean"],"suffixes":[]},{"firstnames":["Elizabeth","M"],"propositions":[],"lastnames":["Brannon"],"suffixes":[]}],"journal":"Cognition","title":"Monkeys match and tally quantities across senses.","year":"2008","number":"3","pages":"617-25","volume":"108","abstract":"We report here that monkeys can actively match the number of sounds they hear to the number of shapes they see and present the first evidence that monkeys sum over sounds and sights. In Experiment 1, two monkeys were trained to choose a simultaneous array of 1-9 squares that numerically matched a sample sequence of shapes or sounds. Monkeys numerically matched across (audio-visual) and within (visual-visual) modalities with equal accuracy and transferred to novel numerical values. In Experiment 2, monkeys presented with sample sequences of randomly ordered shapes or tones were able to choose an array of 2-9 squares that was the numerical sum of the shapes and sounds in the sample sequence. In both experiments, accuracy and reaction time depended on the ratio between the correct numerical match and incorrect choice. These findings suggest monkeys and humans share an abstract numerical code that can be divorced from the modality in which stimuli are first experienced.","doi":"10.1016/j.cognition.2008.05.006","keywords":"18571636","bibtex":"@Article{Jordan2008,\n author = {Kerry E Jordan and Evan L Maclean and Elizabeth M Brannon},\n journal = {Cognition},\n title = {Monkeys match and tally quantities across senses.},\n year = {2008},\n number = {3},\n pages = {617-25},\n volume = {108},\n abstract = {We report here that monkeys can actively match the number of sounds\n\tthey hear to the number of shapes they see and present the first\n\tevidence that monkeys sum over sounds and sights. In Experiment 1,\n\ttwo monkeys were trained to choose a simultaneous array of 1-9 squares\n\tthat numerically matched a sample sequence of shapes or sounds. Monkeys\n\tnumerically matched across (audio-visual) and within (visual-visual)\n\tmodalities with equal accuracy and transferred to novel numerical\n\tvalues. In Experiment 2, monkeys presented with sample sequences\n\tof randomly ordered shapes or tones were able to choose an array\n\tof 2-9 squares that was the numerical sum of the shapes and sounds\n\tin the sample sequence. In both experiments, accuracy and reaction\n\ttime depended on the ratio between the correct numerical match and\n\tincorrect choice. These findings suggest monkeys and humans share\n\tan abstract numerical code that can be divorced from the modality\n\tin which stimuli are first experienced.},\n doi = {10.1016/j.cognition.2008.05.006},\n keywords = {18571636},\n}\n\n","author_short":["Jordan, K. E","Maclean, E. L","Brannon, E. M"],"key":"Jordan2008","id":"Jordan2008","bibbaseid":"jordan-maclean-brannon-monkeysmatchandtallyquantitiesacrosssenses-2008","role":"author","urls":{},"keyword":["18571636"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"http://endress.org/publications/ansgar.bib","dataSources":["xPGxHAeh3vZpx4yyE","TXa55dQbNoWnaGmMq"],"keywords":["18571636"],"search_terms":["monkeys","match","tally","quantities","senses","jordan","maclean","brannon"],"title":"Monkeys match and tally quantities across senses.","year":2008}