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Subjective value of risky foods for individual domestic chicks: A hierarchical bayesian model
https://ir.soken.ac.jp/records/3806
https://ir.soken.ac.jp/records/38061c210ecd-a4cb-429b-ac53-a1acf69b2c1e
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-07-24 | |||||
| タイトル | ||||||
| タイトル | Subjective value of risky foods for individual domestic chicks: A hierarchical bayesian model | |||||
| タイトル | ||||||
| タイトル | Subjective value of risky foods for individual domestic chicks: A hierarchical bayesian model | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
KAWAMORI, Ai
× KAWAMORI, Ai× MATSUSHIMA, Toshiya |
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| 著者別名 |
川森, 愛
× 川森, 愛 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | For animals to decide which prey to attack, the gain and delay of the food item must be integrated in a value function. However, the subjective value is not obtained by expected profitability when it is accompanied by risk. To estimate the subjective value, we examined choices in a cross-shaped maze with two colored feeders in domestic chicks. When tested by a reversal in food amount or delay, chicks changed choices similarly in both conditions (experiment 1). We therefore examined risk sensitivity for amount and delay (experiment 2) by supplying one feeder with food of fixed profitability and the alternative feeder with high- or low-profitability food at equal probability. Profitability varied in amount (groups 1 and 2 at high and low variance) or in delay (group 3). To find the equilibrium, the amount (groups 1 and 2) or delay (group 3) of the food in the fixed feeder was adjusted in a total of 18 blocks. The Markov chain Monte Carlo method was applied to a hierarchical Bayesian model to estimate the subjective value. Chicks undervalued the variable feeder in group 1 and were indifferent in group 2 but overvalued the variable feeder in group 3 at a population level. Reexamination without the titration procedure (experiment 3) suggested that the subjective value was not absolute for each option. When the delay was varied, the variable option was often given a paradoxically high value depending on fixed alternative. Therefore, the basic assumption of the uniquely determined value function might be questioned. | |||||
| 書誌情報 |
Animal Cognition en : Animal Cognition 巻 13, 号 3, p. 431-441, 発行日 2010 |
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| 出版者 | ||||||
| 出版者 | SpringerLink | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 14359448 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1007/s10071-009-0293-1 | |||||
| 関連名称 | 10.1007/s10071-009-0293-1 | |||||
| 権利 | ||||||
| 権利情報 | SpringerLink(The original publication is available at www.springerlink.com) | |||||
