Policies vary substantially in terms of providing sources of psychosocial enrichment. Behavioral economic models of substance use and addiction emphasize that deficits in access to substance-free sources of reward increase substance reinforcing value and risk for addiction. The current study used an alcohol demand curve approach to test the hypothesis that various indices of reward deprivation would be associated with elevated alcohol reinforcing efficacy. We examined associations between alcohol demand indices and several facets of reward deprivation in a sample of young adults (N = 1,331; ages 19-25 years) recruited from the United States and Canada who reported recent binge drinking. Additionally, we created an index of cumulative reward deprivation that integrated the various reward facets and examined its association with alcohol demand intensity and maximum expenditure on alcohol. Our findings indicate that reward deprivation is associated with elevated alcohol demand and provide support for alcohol prevention and intervention approaches that emphasize environmental enrichment.
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http://dx.doi.org/10.1002/jeab.4229 | DOI Listing |
Addict Biol
January 2025
Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Berlin, Germany.
The ability of environmental cues to trigger alcohol-seeking behaviours is thought to facilitate problematic alcohol use. Individuals' tendency to attribute incentive salience to cues may increase the risk of addiction. We sought to study the relationship between incentive salience and alcohol addiction using non-preferring rats to model the heterogeneity of human alcohol consumption, investigating both males and females.
View Article and Find Full Text PDFBehav Pharmacol
November 2024
Departamento de Psicología, Universidad de Jaén, Jaén, Spain.
Increased voluntary consumption of alcohol has been demonstrated in male rats exposed to frustrative reward downshift (the emotional self-medication effect). Access to a wheel for voluntary running abolished this effect in male rats, suggesting an attenuating effect of physical exercise on the negative affect induced by reward downshift and its consequences on drug intake. The present study analyzed this effect in female rats.
View Article and Find Full Text PDFPlants (Basel)
November 2024
Institute of Plant Protection, Muhammad Nawaz Shareef University of Agriculture Multan, Multan 60000, Pakistan.
Climate change effects, including temperature extremes and water stress, cause abiotic stress in plants. These changes directly affect flowering and the flower reward system for pollinators, influencing plant-pollinator interactions and ultimately seed production in flowering plants. Here, we tested the effects of water deprivation on the behavior of various pollinator species, plant-pollinator interactions, and the seed yield of sunflower, L.
View Article and Find Full Text PDFNeuroscience
January 2025
Molecular and Behavioral Neuroscience Laboratory, Pharmacology Department, Universidade Federal de São Paulo, São Paulo, Brazil. Electronic address:
Clinical and preclinical studies suggest that early life stress can increase the risk of developing ethanol use disorder later in life. Although the endocannabinoid (eCB) system plays a role in stress-related behaviors and ethanol consumption, it remains unclear whether the eCB system is affected in response to a combination of both factors. By using male and female adolescent C57BL/6J mice subjected to a maternal separation (MS) stress paradigm from postnatal day (PND) 1 to 14, we explored (1) the consequences of early life stress experiences on ethanol consumption in adolescent mice and (2) how these events affect the eCB system and neuronal activation in brain regions associated with the reward system.
View Article and Find Full Text PDFNat Commun
November 2024
Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
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