منابع مشابه
Can hungry nestlings be trained to reduce their begging?
Nestling begging behavior is usually characterized by a behavioral response of increasing begging levels with an increase in nestling need or hunger. Recent evidence for the possible effect of learning on begging intensity raises the question of how learning can shape this response rule. In particular, it is not clear whether hungry nestlings can learn to reduce their begging when it is not suc...
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User Financial Incentives (UFIs) have emerged as a powerful tool for health promotion. Strong evidence suggests that large enough incentives paid to individuals, conditional on behaviour they can control, encourages more of the desired behaviour. However, such interventions can have unintended consequences for non-targeted behaviours. Implementation difficulties that result in individuals not u...
متن کاملBenefits associated with escalated begging behaviour of black-billed magpie nestlings overcompensate the associated energetic costs.
Several experimental results support the existence of costs associated with exaggerated begging behaviour, which are assumed by some theoretical models of honest signalling in parent-offspring communication. However, to understand how honest begging behaviour is evolutionarily maintained in nature, the long-term cost-benefit output associated with exaggerated signals should also be estimated. A...
متن کاملYolk androgens and begging behaviour in black-headed gull chicks: an experimental field study
Black-headed gulls, Larus ridibundus, produce clutches of three eggs, which contain high levels of maternal androgens in the yolk. These levels increase with laying order and the eggs hatch asynchronously. Experiments have supported the hypothesis that this within-clutch variation in maternal androgens mitigates the disadvantage of last-hatched chicks in sibling competition, by enhancing embryo...
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the aim of this study is to study the nomad women's indigenous knowledge of housing in tribes of kalhor kalhor. the study was a done by qualitative approach, using participatory methods pra, and focus groups in the gilan e gharb city of kermanshah province. the results were analyzed by content analysis. purposeful sampling was used for data collection. findings from real-life context of tr...
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ژورنال
عنوان ژورنال: Theory, Culture & Society
سال: 2010
ISSN: 0263-2764,1460-3616
DOI: 10.1177/0263276410383720