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1.
J Behav Med ; 47(3): 458-470, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38342789

RESUMEN

Maintaining a healthy body weight requires balancing energy intake and expenditure. While previous research investigated energy input or food decisions, little is known about energy output or leisure activity decisions. By combining experimental decision-making paradigms and computational approaches, we investigated the psychological mechanisms of self-controlled food and leisure activity decisions through the effects of reward-oriented and health-oriented preferences as well as body weight status, stress, and coping. Based on individual's responses, the self-controlled food and leisure activity choices were indexed as the proportions of "no" unhealthy but tasty (or enjoyable) (inhibitory self-control against short-term pleasure) and "yes" healthy but not tasty (or not enjoyable) responses (initiatory self-control for long-term health benefits). The successful self-control decisions for food and leisure activity were positively correlated with each other, r = 22, p < .01. In beta regression analyses, the successful self-controlled food decisions decreased as the taste-oriented process increased, ß = - 0.50, z = -2.99, p < .005, and increased as the health-oriented process increased, ß = 1.57, z = 4.68, p < .001. Similarly, the successful self-controlled leisure activity decisions decreased as the enjoyment-oriented process increased, ß = - 0.79, z = -5.31, p < .001, and increased as the health-oriented process increased, ß = 0.66, z = 2.19, p < .05. The effects of the other factors were not significant. Overall, our findings demonstrated the mutual interrelationship between food and leisure activity decision-making and suggest that encouraging health-oriented processes may benefit both energy input and expenditure domains and improve self-controlled choices.


Asunto(s)
Actividades Recreativas , Autocontrol , Humanos , Actividades Recreativas/psicología , Peso Corporal , Preferencias Alimentarias/psicología , Alimentos
2.
Front Psychol ; 14: 1265074, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38130967

RESUMEN

The present paper aims to provide the latest perspectives and future directions on the association between emotions and eating behavior. We discussed individual differences in the impact of negative emotions on eating, emotional eating as disinhibited eating decisions with heightened reward values of and sensitivity to palatable foods in response to negative emotions and social isolation, in addition to emotional eating as maladaptive coping strategies under negative emotion and stress, hedonic (pleasure-oriented) eating decisions mediated by the brain reward system, and self-controlled (health-oriented) eating decisions mediated by the brain control system. Perspectives on future directions were addressed, including the development of early eating phenotypes in infancy, shared neural mechanisms mediated by the ventromedial prefrontal cortex and the dorsolateral prefrontal cortex in emotion and eating decision regulation, possible roles of interoception incorporating hunger and satiety signals, gut microbiome, the insula and the orbitofrontal cortex, and emotional processing capacities in hedonic eating and weight gain.

3.
medRxiv ; 2023 Oct 04.
Artículo en Inglés | MEDLINE | ID: mdl-37873243

RESUMEN

Brain areas activated during pain can contribute to enhancing or reducing the pain experience, showing a potential connection between chronic pain and the neural response to pain in adolescents and youth. This study examined changes in brain activation associated with experiencing physical pain, and the observation of physical and emotional pain in others, by using functional magnetic resonance imaging (fMRI) before and after intensive interdisciplinary pain treatment (IIPT). Eighteen youth (age 14 to 18) with widespread chronic pain completed fMRI testing before and after IIPT to assess changes in brain activation in response to physical and emotional pain. Broadly, brain activation changes were observed in frontal, somatosensory, and limbic regions. These changes suggest improvements in descending pain modulation via thalamus and caudate, and the different pattern of brain activation after treatment suggests better discrimination between physical and emotional pain. Brain activation changes were also correlated with improvements in clinical outcomes of catastrophizing (reduced activation in right caudate, right mid-cingulate, and postcentral gyrus) and pain-related disability (increased activation in precentral gyrus, left hippocampus, right middle occipital cortex, and left superior frontal gyrus). These changes support interpretation that reduced brain protective responses to pain were associated with treatment-related improvements. This pilot study highlights the need for larger trials designed to better understand the brain mechanisms involved in pediatric widespread pain treatment.

4.
Sci Rep ; 13(1): 6145, 2023 04 15.
Artículo en Inglés | MEDLINE | ID: mdl-37061558

RESUMEN

We examined the neurocomputational mechanisms in which male adolescents make food and physical activity decisions and how those processes are influenced by body weight and physical activity levels. After physical activity and dietary assessments, thirty-eight males ages 14-18 completed the behavioral rating and fMRI decision tasks for food and physical activity items. The food and physical activity self-control decisions were significantly correlated with each other. In both, taste- or enjoyment-oriented processes were negatively associated with successful self-control decisions, while health-oriented processes were positively associated. The correlation between taste/enjoyment and healthy attribute ratings predicted actual laboratory food intake and physical activities (2-week activity monitoring). fMRI data showed the decision values of both food and activity are encoded in the ventromedial prefrontal cortex, suggesting both decisions share common reward value-related circuits at the time of choice. Compared to the group with overweight/obese, the group with normal weight showed stronger brain activations in the cognitive control, multisensory integration, and motor control regions during physical activity decisions. For both food and physical activity, self-controlled decisions utilize similar computational and neurobiological mechanisms, which may provide insights into how to promote healthy food and physical activity decisions.


Asunto(s)
Alimentos , Obesidad , Masculino , Humanos , Adolescente , Obesidad/psicología , Sobrepeso , Encéfalo/diagnóstico por imagen , Corteza Prefrontal/diagnóstico por imagen , Ejercicio Físico , Imagen por Resonancia Magnética
5.
Int J Psychophysiol ; 183: 138-147, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36423712

RESUMEN

Intolerance of uncertainty (IU) is a transdiagnostic construct referring to the aversive interpretation of contexts characterized by uncertainty. Indeed, there is a growing body of research examining individual differences in IU and how these are associated with emotional anticipation and reactivity during periods of certainty and uncertainty, however, how these associations are reflected via neurophysiological indices remain understudied and poorly understood. The present study examined the relationship between self-reported IU and neurophysiological measures of emotional anticipation and reactivity, namely stimulus preceding negativity (SPN) and late positive potential (LPP), and self-report measures of emotional experiences. These measures were captured during an S1-S2 picture viewing tasks in which participants were presented with cues (S1) that either indicated the affective valence of upcoming picture (S2) or provided no information about the valence. Findings here provide evidence for significant associations between SPN amplitude and IU scores during uncertain and certain-positive cueing conditions, and significant associations between LPP amplitude and IU scores during both certain- and uncertain-negative picture viewing conditions that appear driven by prospective IU sub-scores. These positive associations between IU and SPN amplitude are suggestive of heightened emotional anticipation following S1 cues, while positive associations between IU and LPP are suggestive of heightened emotional reactivity following S2 images. These findings are discussed in detail relative to existing IU literature, and potential implications of these findings.


Asunto(s)
Electroencefalografía , Potenciales Evocados , Humanos , Potenciales Evocados/fisiología , Incertidumbre , Estudios Prospectivos , Anticipación Psicológica/fisiología
6.
Emotion ; 22(1): 153-166, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-35007118

RESUMEN

When we judge someone's emotional expressions, we often consider the emotions of other people who are present in the same social context. Using a psychophysical method, we estimated the influence of the emotions of contextual faces on the emotional perception of an individual face. Particularly, we hypothesize that a shift in the perceptual judgment occurs when the target individual and others share a Group Membership. To test this hypothesis, we generated artificial images of two sports teams and asked participants to first judge the outcome of the game (win/loss for Experiment 1; win/loss/draw for Experiment 2) by looking at the facial emotions of four members of a team, and then judge the emotional category of the target face presented amid the contextual faces. The expressions of the target faces were gradually morphed (happy to sad for Experiment 1; happy to angry for Experiment 2). In Experiment 1, the perceptual decision threshold of the emotional categories of the target face shifted toward the emotional context of the same group members. However, such shifts did not occur in the different group condition. Experiment 2 showed that the shifted perceptual decision threshold significantly differed from the neutral condition only in the same group condition, which further replicated the results of Experiment 1. Our results indicate that people consider the emotions of others in the context of estimating an individual's emotion when they are socially attached to each other through Group Membership. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Asunto(s)
Emociones , Expresión Facial , Procesos de Grupo , Felicidad , Humanos , Percepción
7.
J Exp Psychol Appl ; 28(4): 775-793, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35025577

RESUMEN

How do individuals decide how much private information to share publicly? We explore: (a) What are contemporary attitudes about sharing? (b) How much can an organization influence members' sharing indirectly through targeting attitudes, and/or directly through targeting behaviors? We draw on ambivalence, nudging, and privacy paradox theories to examine these important questions using samples of university students in the context of setting up public student profile pages viewable to other members of their institution. We find that positive, negative, and ambivalent attitudes coexist in the population (Study 1). We also find that individuals are cognizant of privacy-intrusiveness (Study 2), suggesting sharing is not mindless. Rather, individuals share more when concerns are relatively lower, versus when only concerns or both concerns and benefits are emphasized (positive, negative, and balanced attitudinal nudges; Studies 3 and 4). Further, we find that attitudinal and behavioral nudges separately influence sharing (Study 4). These findings contribute to our understanding of the effects of ambivalence and suggest ways organizations can influence-and members might mitigate-(un)wanted sharing compliance. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Asunto(s)
Actitud , Difusión de la Información , Humanos , Afecto
8.
Front Psychol ; 12: 695388, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34456810

RESUMEN

This study explored risk parameters of obesity in food decision-making in mother-child dyads. We tested 45 children between 8-12 years and their biological mothers to measure the decision weights of food health attributes, the decision weights of food taste attributes, self-regulated food decisions, and self-reported self-control scores. Maternal body mass index (BMI), and children's BMI-percentiles-for-age were also measured. We found a positive correlation between children's and their mothers' decision weights of taste attributes in food decision-making. We also found a positive correlation between children's BMI %iles and their mothers' BMIs. Children with overweight/obesity demonstrated lower correlations between health and taste ratings and a lower percentage of self-regulated food decisions (i.e., resisting to eat tasty but unhealthy foods or choosing to eat not-tasty but healthy foods) than children with healthy weight. Our findings suggested that the decision weights of taste attributes and weight status shared similar patterns in mother-child dyads. Also, the findings suggested that establishing dynamics of unhealthy food-decision making may increase the risk of childhood obesity. Helping children to develop the dynamics of healthy food-decision making by increasing the importance of health while decreasing the importance of taste may promote resilience to susceptibility to unhealthy eating and weight gain.

9.
Front Psychol ; 12: 654200, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34084148

RESUMEN

Food choices are a key determinant of dietary intake, with brain regions, such as the mesolimbic and prefrontal cortex maturing at differential rates into adulthood. More needs to be understood about developmental changes in healthy and unhealthy food perceptions and preference. We investigated how food perceptions and preference vary as a function of age and how food attributes (taste and health) impact age-related changes. One hundred thirty-nine participants (8-23 years, 60 females) completed computerized tasks to rate high-calorie and low-calorie food cues for taste, health, and liking (preference), followed by 100 binary food choices based on each participant's ratings. Dietary self-control was considered successful when the healthier (vs. tastier) food was chosen. Self-control success ratio was the proportion of success trials over total number of choices. Beta-weights for health (ß-health) and taste (ß-taste) were calculated as each attribute's influence on food preference. Adiposity measurements included BMI z-score and waist-to-height ratio (WHtR). High-calorie foods were rated more tasty and less healthy with increasing age. Older participants liked high-calorie foods more (vs. younger participants), and ß-taste was associated with age. Significant age-by-WHtR interactions were observed for health and taste ratings of high-calorie foods, ß-taste, and marginally for preference of high-calorie foods. Stratifying by WHtR (high, low), we found age-related increases in taste and preference ratings of high-calorie foods in the high WHtR group alone. In contrast, age-related decreases in health ratings of high-calorie foods were significant in the low WHtR group alone. Age and ß-taste were significantly associated in the high WHtR group and only marginally significant with low WHtR. Although participants rated low-calorie foods as less tasty and less healthy with increasing age, there was no association between age and preference for low-calorie foods. Participants made faster food choices with increasing age regardless of WHtR, with a significant age-by-WHtR interaction on reaction time (RT). There were no age-related effects in self-control success ratio and ß-health. These results suggest that individual differences in age and central adiposity play an important role in preference for high-calorie foods, and a higher importance of food tastiness in food choice may contribute to greater preference for high-calorie foods with increasing age.

11.
Front Psychol ; 11: 599663, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33343472

RESUMEN

Children are vulnerable to adverse effects of food advertising. Food commercials are known to increase hedonic, taste-oriented, and unhealthy food decisions. The current study examined how promoting resilience to food commercials impacted susceptibility to unhealthy food decision-making in children. To promote resilience to food commercials, we utilized the food advertising literacy intervention intended to enhance cognitive skepticism and critical thinking, and decrease positive attitudes toward commercials. Thirty-six children aged 8-12 years were randomly assigned to the food advertising literacy intervention or the control condition. Eighteen children received four brief intervention sessions via video over 1 week period. In each session, children watched six food commercials with interspersed embedded intervention narratives. While watching food commercials and narratives, children were encouraged to speak their thoughts out loud spontaneously ("think-aloud"), which provided children's attitudes toward commercials. Eighteen children in the control condition had four control sessions over 1 week, and watched the same food commercials without intervention narratives while thinking aloud. The first and last sessions were held in the laboratory, and the second and third sessions were held at the children's homes. Susceptibility to unhealthy food decision-making was indicated by the decision weights of taste attributes, taste perception, food choices, ad libitum snacking, and cognitive and affective attitudes toward food commercials. As hypothesized, the intervention successfully decreased susceptibility to unhealthy food decision-making evidenced by reduced decision weights of the taste in food decisions, decreased tasty perception of unhealthy foods, and increased cognitive skepticism and critical thinking toward food commercials. In addition, as children's opinions assimilated to intervention narratives, their cognitive skepticism and critical thinking toward commercials increased. The aforementioned results were not shown in the control condition. However, this brief intervention was not enough to change actual food choices or food consumption. Results of this study suggest that promoting resilience to food commercials by enhancing cognitive skepticism and critical thinking effectively reduced children's susceptibility to unhealthy food-decision making.

12.
Artículo en Inglés | MEDLINE | ID: mdl-32828721

RESUMEN

BACKGROUND: To investigate the neurobiological mechanisms that determine self-regulation of smoking urges when a person encounters stress, we investigated brain network interactions of smoking self-regulation by employing a real-time smoking (nicotine delivery) decision paradigm and a brain-as-predictor neuroimaging approach. METHODS: While in the functional magnetic resonance imaging scanner, 25 cigarette smokers who abstained from smoking overnight made 200 real smoking decisions regarding whether or not to take a puff of an electronic cigarette during 3 different stress conditions (cognitive stress, emotional stress, and no stress). Cognitive stress was induced by a concurrent working memory load, and emotional stress was induced by manipulating a chance of aversive electric shock. RESULTS: Behaviorally, both cognitive and emotional stress manipulations increased the probability of making a decision to smoke (i.e., taking a puff). In magnetic resonance imaging trial-by-trial analyses, the dorsolateral prefrontal cortex activity measured at the time of the stress cue significantly predicted future smoking decisions that occurred several seconds later. Furthermore, the influence of dorsolateral prefrontal cortex activity on smoking decisions was mediated by the ventral striatum activity at the time of smoking decisions. CONCLUSIONS: Our study demonstrated that brain responses at the time of a stressful moment determine subsequent trial-by-trial smoking decisions by systematically altering brain executive (dorsolateral prefrontal cortex) and reward (ventral striatum) system network activities. Our results further suggest potential translational importance of neuroscientific approaches to predicting self-regulation failures at critical stressful moments.


Asunto(s)
Sistemas Electrónicos de Liberación de Nicotina , Encéfalo , Humanos , Imagen por Resonancia Magnética , Corteza Prefrontal , Fumar
13.
Curr Nutr Rep ; 9(3): 236-250, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32720119

RESUMEN

PURPOSE OF REVIEW: The goal of the current paper is to review the literature on the neural and behavioral factors involved in food decision-making in youth. RECENT FINDINGS: Recent neuroimaging studies that employ passive viewing paradigms have found that exposure to food-related cues activate reward, motor planning, and attentional salience signals in children. Greater activations of reward signals and/or lower activations of control signals are associated with overeating and weight gain. Neuroimaging studies with decision-making paradigms have found the reward network in the brain activates during food choices, while control network activates less strongly. Findings suggest that exposure to food cues activates reward/valuation network, but activation of control network tends to be relatively weaker in children. Hedonic aspects of foods are predominantly considered in children's food choices, and their dietary self-control is not matured yet. The increased activation in reward network and the decreased activation in control network are associated with risk of developing obesity.


Asunto(s)
Encéfalo/fisiología , Toma de Decisiones/fisiología , Preferencias Alimentarias/fisiología , Encéfalo/diagnóstico por imagen , Niño , Dieta , Humanos
14.
Appetite ; 139: 84-89, 2019 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-31026492

RESUMEN

Self-control is important for healthy eating. Achieving and maintaining healthy eating behaviors can be challenging for children. Susceptibility to palatable unhealthy foods with high sugar, fat, and/or salt is a biologically predisposed, dominant response that can hinder healthy eating decisions. Self-control can help adults to build automatized strategies for resisting susceptibility to unhealthy foods. Likewise, if self-control helps children to learn strategies for resisting susceptibility to unhealthy foods, susceptibility to unhealthy foods would be demonstrated in children with low self-control. Specifically, the association between unhealthiness and tastiness (i.e., unhealthy foods taste better) is one of the important mechanisms underlying susceptibility to unhealthy foods. We expected susceptibility to unhealthy foods to be indicated by the association between unhealthiness and tastiness, as well as better taste perception of unhealthy foods and unhealthy food preferences. In our study, fifty-nine children aged 8-13 years reported their perceived self-control, and completed computerized food rating tasks measuring their healthiness, taste, and preference ratings on 30 healthy and 30 unhealthy foods. Results showed that children with lower self-control demonstrated heightened susceptibility to unhealthy foods, but children with higher self-control did not. Our findings suggested that higher levels of self-control would help children to develop healthy eating strategies for regulating dispositional susceptibility to unhealthy foods.


Asunto(s)
Dieta Saludable/psicología , Preferencias Alimentarias/psicología , Autocontrol/psicología , Percepción del Gusto , Adolescente , Niño , Conducta de Elección , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino
15.
Psychopharmacology (Berl) ; 235(11): 3303-3313, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30244284

RESUMEN

RATIONALE: Patients weigh risks and benefits when making treatment decisions. Despite this, relatively few studies examine the behavioral patterns underpinning these decisions. Moreover, individual differences in these patterns remain largely unexplored. OBJECTIVES: The purpose of this study was to test a probability discounting model to explain the independent influences of risks and benefits when patients make hypothetical treatment decisions. Furthermore, we examine how individual differences in this probability discounting function are associated with patient demographics, clinical characteristics, disease knowledge, neuropsychiatric status, and adherence. METHODS: Two hundred eight participants with relapsing-remitting multiple sclerosis (MS) indicated their likelihood (0-100%) of taking a hypothetical medication as the probability of mild side effects (11 values from .1 to 99.9%) and reported medication efficacies (11 values from .1 to 99.9%) varied systematically. They also completed a series of questionnaires and cognitive tests. RESULTS: Individual components of medication treatment decision making were successfully described with a probability discounting model. High rates of discounting based on risks were associated with poor treatment adherence and less disease-specific knowledge. In contrast, high rates of discounting of benefits was associated with poorer cognitive functioning. Regression models indicated that risk discounting predicted unique variance in treatment adherence. CONCLUSIONS: Insights gained from the present study represent an important early step in understanding individual differences associated with medical decision making in MS. Future research may wish to use this knowledge to inform the development of empirically supported adherence interventions.


Asunto(s)
Toma de Decisiones , Descuento por Demora , Conocimientos, Actitudes y Práctica en Salud , Cumplimiento de la Medicación/psicología , Esclerosis Múltiple Recurrente-Remitente/psicología , Escalas de Valoración Psiquiátrica , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Esclerosis Múltiple Recurrente-Remitente/tratamiento farmacológico , Probabilidad , Autoinforme , Encuestas y Cuestionarios
16.
Front Psychol ; 9: 1293, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30100889

RESUMEN

Television food advertising influences children's food choices. The attribute of "taste" drives children's food choices, and exposure to food commercials can increase the importance of "taste" when children make food decisions. The current pilot study explored whether food advertising literacy training influences children's food choices. In particular, whether the training would change the way children weigh the importance of taste attributes in their food decisions. Thirty-nine children ages 8-13 were recruited. Twenty-three of those children had four sessions of food advertising literacy training (1 week): children watched four videos of food commercials embedded with factual narratives (i.e., building cognitive defenses; e.g., "commercials want to sell products") and evaluative narratives (i.e., changing affective responses toward commercials; e.g., "these foods don't make you happy"). The first and last sessions were held in the laboratory, and the second and third sessions were at home. During the training, children were encouraged to think aloud while watching commercials and provided narratives to encourage active information processing. At baseline and post-training, children made binary eating choices for 60 foods and rated each food item on health and taste. We fitted linear regression models to examine whether taste and health attributes predicted unique variance in each child's food choices. The results showed that taste attributes in children's food choices was significantly decreased after completing the training. This finding suggested that improving food advertising literacy could be helpful for reducing the influence of taste attributes in the food decision-making process. Also, the cognitive literacy training increased children's critical thoughts toward commercials during thinking aloud. These findings suggest that food advertising literacy training was helpful for reducing the importance of "taste" in children's food decisions. In contrast, 16 children in the control condition (i.e., watching four videos of food commercials without narratives in 1 week) did not show any significant change in their food choices. Future research should investigate the utility of food advertising literacy training for the promotion of healthy eating and the prevention of childhood obesity.

17.
Health Psychol ; 37(7): 680-690, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29863373

RESUMEN

OBJECTIVE: Although the effectiveness and risks of multiple sclerosis (MS) therapies are established, relatively little is known about how these benefits and risks are perceived and weighed by patients. This risk-benefit trade-off is important for clinicians, industry, and regulators to consider when determining which therapies to develop, approve for clinical use, and recommend to individual patients. The primary objective of the present study was to describe individual differences in how MS patients weigh risks and benefits when making treatment decisions. METHOD: Two hundred ninety patients with MS completed tasks assessing their willingness to take a hypothetical disease-modifying therapy (DMT) at varying levels of efficacy, side effect probability, and side effect severity. Patients also completed questionnaires assessing MS knowledge, medication beliefs, health care climate, and disease severity. RESULTS: Patients with a primary progressive course reported increased DMT willingness compared to patients with relapsing-remitting and secondary progressive courses. Patients were less willing to initiate a DMT across a range of efficacies and side effects if they had never taken a DMT, reported more complementary and alternative health beliefs, or reported a history of discontinuing DMTs due to side effects. More MS knowledge was associated with more willingness to initiate a DMT. CONCLUSIONS: The results represent an initial step in understanding how patients with chronic disease balance the risks and benefits of medication initiation. Extension of this research may have implications for pharmaceutical development, physician-patient interaction, adherence intervention, and disease education. (PsycINFO Database Record


Asunto(s)
Esclerosis Múltiple/terapia , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Esclerosis Múltiple/patología , Recurrencia , Medición de Riesgo , Adulto Joven
18.
Behav Brain Res ; 349: 54-62, 2018 09 03.
Artículo en Inglés | MEDLINE | ID: mdl-29698695

RESUMEN

Great progress has been made in understanding how people make financial decisions. However, there is little research on how people make health and treatment choices. Our study aimed to examine how participants weigh benefits (reduction in disease progression) and probability of risk (medications' side effects) when making hypothetical treatment decisions, and to identify the neural networks implicated in this process. Fourteen healthy participants were recruited to perform a treatment decision probability discounting task using MRI. Behavioral responses and skin conductance responses (SCRs) were measured. A whole brain analysis were performed to compare activity changes between "mild" and "severe" medications' side effects conditions. Then, orbitofrontal cortex (OFC), ventral striatum (VS), amygdala and insula were chosen for effective connectivity analysis. Behavioral data showed that participants are more likely to refuse medication when side effects are high and efficacy is low. SCRs values were significantly higher when people made medication decisions in the severe compared to mild condition. Functionally, OFC and VS were activated in the mild condition and were associated with increased likehood of choosing to take medication (higher area under the curve "AUC" side effects/efficacy). These regions also demonstrated an increased effective connectivity when participants valued treatment benefits. By contrast, the OFC, insula and amygdala were activated in the severe condition and were associated with and increased likelihood to refuse treatment. These regions showed enhanced effective connectivity when participants were confronted with increased side effects severity. This is the first study to examine the behavioral and neural bases of medical decision making.


Asunto(s)
Encéfalo/fisiología , Toma de Decisiones/fisiología , Cumplimiento y Adherencia al Tratamiento/psicología , Adolescente , Adulto , Encéfalo/diagnóstico por imagen , Mapeo Encefálico , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Femenino , Respuesta Galvánica de la Piel , Conductas Relacionadas con la Salud/fisiología , Humanos , Imagen por Resonancia Magnética , Masculino , Modelos Económicos , Modelos Psicológicos , Vías Nerviosas/diagnóstico por imagen , Vías Nerviosas/fisiología , Adulto Joven
19.
Psychol Sci ; 29(3): 447-462, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29369749

RESUMEN

Understanding why people make unhealthy food choices and how to promote healthier choices is critical to prevent obesity. Unhealthy food choices may occur when individuals fail to consider health attributes as quickly as taste attributes in their decisions, and this bias may be modifiable by health-related external cues. One hundred seventy-eight participants performed a mouse-tracking food-choice task with and without calorie information. With the addition of calorie information, participants made healthier choices. Without calorie information, the initial integration of health attributes in overweight individuals' decisions was about 230 ms delayed relative to the taste attributes, but calorie labeling promoted healthier choices by speeding up the integration of health attributes during a food-choice task. Our study suggests that obesogenic choices are related to the relative speed with which taste and health attributes are integrated into the decision process and that this bias is modifiable by external health-related cues.


Asunto(s)
Toma de Decisiones , Preferencias Alimentarias , Obesidad/psicología , Sobrepeso/psicología , Autocontrol , Adolescente , Adulto , Ingestión de Energía , Femenino , Humanos , Modelos Lineales , Masculino , Obesidad/prevención & control , Sobrepeso/prevención & control , Adulto Joven
20.
Exp Clin Psychopharmacol ; 25(6): 479-484, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29251977

RESUMEN

Although effective disease-modifying treatments (DMTs) are available for individuals suffering from multiple sclerosis (MS), many patients fail to take their recommended medications. Unlike medications that provide immediate relief from existing symptoms, DMTs decrease the probability of future symptoms (i.e., a probabilistic benefit) while concurrently carrying an appreciable risk of immediate side effects (i.e., a probabilistic cost). Prior research has shown that both the probability of reducing disease progression and the probability of experiencing side effects impact patients' likelihood of taking a hypothetical DMT. The role that side effect severity plays in treatment decisions remains unexplored. The present study examined how probability of medication efficacy and side effect severity impact patients' likelihood of taking hypothetical DMTs. Patients' likelihood of taking a DMT systematically decreased as medication efficacy decreased and side effect severity increased. Because side effect severity appears to impact decision-making processes in unique ways, the present results suggest that providers should present information on severe (which are typically rare) and mild to moderate side effects (which are more common) separately. (PsycINFO Database Record


Asunto(s)
Concienciación , Toma de Decisiones , Cumplimiento de la Medicación/psicología , Motivación , Esclerosis Múltiple/psicología , Esclerosis Múltiple/terapia , Análisis de Varianza , Área Bajo la Curva , Evaluación de la Discapacidad , Femenino , Humanos , Masculino , Probabilidad , Encuestas y Cuestionarios , Resultado del Tratamiento
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