Top 2 Biorxiv Papers Today in Animal Behavior And Cognition


1.997 Mikeys
#1. Anxious and obsessive-compulsive traits are independently associated with valuation of non-instrumental information
Daniel Bennett, Kiran Sutcliffe, Nicholas Poh-Jie Tan, Luke D Smillie, Stefan Bode
Aversion to uncertainty about the future has been proposed as a transdiagnostic trait underlying psychiatric diagnoses including obsessive-compulsive disorder and generalised anxiety. This association might explain the frequency of pathological information-seeking behaviours such as compulsive checking and reassurance-seeking in these disorders. Here we tested the behavioural predictions of this model using a non-instrumental information-seeking task that measured preferences for unusable information about future outcomes in different payout domains (gain, loss, and mixed gain/loss). We administered this task, along with a targeted battery of self-report questionnaires, to a general-population sample of 146 adult participants. Using computational cognitive modelling of choices to test competing theories of information valuation, we found evidence for a model in which preferences for costless and costly information about future outcomes were independent, and in which information preference was modulated by both outcome mean and...
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biorxivpreprint: Anxious and obsessive-compulsive traits are independently associated with valuation of non-instrumental information https://t.co/Lx5oXXrAJ2 #bioRxiv
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1.997 Mikeys
#2. Hormones as adaptive control systems in juvenile fish
Jacqueline Weidner, Jarl Giske, Sigrunn Eliassen, Camilla Haakonsrud Jensen, Christian Joergensen
Growth is an important theme in many biological disciplines. Physiologists often relate growth rates to hormonal control of essential processes. Ecologists often study growth as function of gradients or combinations of environmental factors. Fewer studies have investigated the combined effects of environmental and hormonal control on growth. Here, we present an evolutionary optimization model of fish growth that combines internal regulation of growth by hormone levels with the external influence of food availability and predation risk. Hormones are represented by growth hormone, thyroid hormone and orexin functions. By studying a range from poor to rich environments, we find that the level of food availability in the environment results in different evolutionarily optimal strategies of hormone levels. With more food available, higher levels of hormones are optimal, resulting in higher food uptake and growth. By using this fitness-based approach we also find a consequence of evolutionary optimization of survival on optimal hormone...
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Total Words: 20991
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