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1.
Nat Commun ; 14(1): 6534, 2023 10 17.
Artículo en Inglés | MEDLINE | ID: mdl-37848435

RESUMEN

Reinforcement-based adaptive decision-making is believed to recruit fronto-striatal circuits. A critical node of the fronto-striatal circuit is the thalamus. However, direct evidence of its involvement in human reinforcement learning is lacking. We address this gap by analyzing intra-thalamic electrophysiological recordings from eight participants while they performed a reinforcement learning task. We found that in both the anterior thalamus (ATN) and dorsomedial thalamus (DMTN), low frequency oscillations (LFO, 4-12 Hz) correlated positively with expected value estimated from computational modeling during reward-based learning (after outcome delivery) or punishment-based learning (during the choice process). Furthermore, LFO recorded from ATN/DMTN were also negatively correlated with outcomes so that both components of reward prediction errors were signaled in the human thalamus. The observed differences in the prediction signals between rewarding and punishing conditions shed light on the neural mechanisms underlying action inhibition in punishment avoidance learning. Our results provide insight into the role of thalamus in reinforcement-based decision-making in humans.


Asunto(s)
Refuerzo en Psicología , Recompensa , Humanos , Reacción de Prevención/fisiología , Castigo , Tálamo
2.
Psicol. ciênc. prof ; 43: e249513, 2023.
Artículo en Portugués | LILACS, INDEXPSI | ID: biblio-1431132

RESUMEN

Este ensaio teórico-reflexivo tem como objetivo discutir sobre as contribuições dos estudos da criminologia e sua crítica para as diversas formas de aprisionamento feminino, e mais atualmente para o encarceramento em massa no sistema prisional, além de abrir espaço para o debate sobre as diferentes perspectivas feministas e as relações com os estudos criminológicos, sobretudo com os posicionamentos da chamada criminologia crítica. Reconhecem-se importantes avanços e conquistas feministas no debate sobre a estruturação masculinizada do direito penal e do seu fazer jurídico, mas também a manutenção de diversas formas de violência de gênero que configuram um sistema penal antropocêntrico, seletivo, racista e discriminatório. Indica-se a urgência de estudos interseccionais que considerem as particularidades e reinvindicações das mulheres no cárcere e suas formas de militância, sobretudo diante de população carcerária feminina composta majoritariamente por mulheres negras, pobres e periféricas. Faz-se visível a necessidade de uma análise dos fatores que atravessam o encarceramento feminino por uma ótica feminista plural, adequada às realidades que se estudam e atenta às múltiplas perspectivas que podem existir dentro do feminismo.(AU)


This theoretical-reflexive essay aims to discuss the contributions of criminological studies and their critique of the various forms of imprisonment of women, and more recently of mass incarceration in the prison system, in addition to opening space for the debate on the different feminist perspectives and their relations with criminological studies, especially with the positions of the so-called critical criminology. Important feminist advances and conquests are recognized in the debate about the masculinized structure of penal law and its legal practice, but also the maintenance of diverse forms of gender violence that configure an anthropocentric, selective, racist, and discriminatory penal system. It indicates the urgency of intersectional studies that consider the particularities and claims of women in prison and their forms of militancy, especially in the face of the female prison population composed mostly of black, poor, and peripheral women. The need for an analysis of the factors that cross women's imprisonment from a plural feminist perspective, adequate to the realities under study and attentive to the multiple perspectives that may exist within feminism, becomes visible.(AU)


Este ensayo teórico-reflexivo pretende discutir las aportaciones de los estudios criminológicos y su crítica a las distintas formas de encarcelamiento femenino, y más recientemente de encarcelamiento masivo en el sistema penitenciario, además de generar debate sobre las distintas perspectivas feministas y sus relaciones con los estudios criminológicos, especialmente con las posiciones de la Criminología Crítica. Se reconocen importantes avances y logros feministas en el debate sobre la estructuración masculinizada del derecho penal y su práctica jurídica, además del mantenimiento de diversas formas de violencia de género que configuran un sistema penal antropocéntrico, selectivo, racista y discriminatorio. Se necesitan estudios interseccionales que consideren las particularidades y reivindicaciones de las mujeres en prisión y sus formas de militancia, principalmente ante la población penitenciaria femenina compuesta mayoritariamente por mujeres negras, pobres y periféricas. Se hace evidente la necesidad de analizar los factores que inciden en el encarcelamiento femenino desde una perspectiva feminista plural, adecuada a las realidades que se estudian y atenta a las múltiples perspectivas que pueden existir dentro del feminismo.(AU)


Asunto(s)
Humanos , Femenino , Prisiones , Feminismo , Criminología , Servicio de Acompañamiento de Pacientes , Prejuicio , Trabajo Sexual , Psicología , Psicología Social , Política Pública , Castigo , Calidad de Vida , Violación , Rechazo en Psicología , Religión , Rol , Seguridad , Conducta Sexual , Ajuste Social , Conducta Social , Cambio Social , Clase Social , Problemas Sociales , Socialización , Factores Socioeconómicos , Sociología , Estereotipo , Tabú , Robo , Desempleo , Embarazo , Áreas de Pobreza , Crianza del Niño , Demografía , Composición Familiar , Higiene , Política de Planificación Familiar , Hechicería , Colonialismo , Congresos como Asunto , Sexualidad , Conocimiento , Estadística , Crimen , Cultura , Vandalismo , Derecho Sanitario , Estado , Regulación Gubernamental , Aplicación de la Ley , Poblaciones Vulnerables , Agresión , Grupos Raciales , Escolaridad , Humanización de la Atención , Mercado de Trabajo , Productos para la Higiene Menstrual , Feminidad , Ageísmo , Racismo , Sexismo , Discriminación Social , Tráfico de Drogas , Reincidencia , Activismo Político , Opresión Social , Vulnerabilidad Sexual , Androcentrismo , Libertad , Respeto , Sociedad Civil , Rol de Género , Marco Interseccional , Ciudadanía , Estructura Familiar , Personal de Instituciones Correccionales , Promoción de la Salud , Homicidio , Tareas del Hogar , Derechos Humanos , Mala Praxis , Menstruación , Principios Morales , Madres , Motivación
3.
J Relig Health ; 61(6): 4337-4351, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35639222

RESUMEN

This paper explores how Islamic religious beliefs; spiritual practices and fatalism may act as barriers to a diagnosis of oral cancer in Rawalpindi/Islamabad Pakistan. The qualitative methodology is oral history and interviews took place with fifteen women diagnosed with oral cancer and receiving treatment in hospital. The research provides a model illustrating how religiosity, fatalism and the social determinants of health exist on a continuum and influence the perspectives of women in Pakistan, contributing to their late presentation and diagnosis of oral cancer. Analysis of the patients' oral histories, suggests improved communication between medical professionals and integration of spiritual/traditional healers into the existing health care system of Pakistan which may assist in reducing oral health inequalities.


Asunto(s)
Neoplasias de la Boca , Espiritualidad , Femenino , Humanos , Islamismo , Pakistán , Castigo
4.
Front Public Health ; 10: 825328, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35359791

RESUMEN

Background: The game of interest is the root cause of the non-cooperative competition between urban and rural medical and health institutions. The study investigates competition and cooperation among urban and rural medical institutions using the evolutionary game analysis. Methods: With the evolutionary game model, analysis of the stable evolutionary strategies between the urban and rural medical and health facilities is carried out. A numerical simulation is performed to demonstrate the influence of various values. Results: The result shows that the cooperation mechanism between urban and rural medical Institutions is relevant to the efficiency of rural medical institutions, government supervision, reward, and punishment mechanism. Conclusions: Suggestions for utilizing the government's macro regulation and control capabilities, resolving conflicts of interest between urban and rural medical and health institutions is recommended. In addition, the study again advocates mobilizing the internal power of medical institutions' cooperation to promote collaboration between urban and rural medical and health institutions.


Asunto(s)
Prestación Integrada de Atención de Salud , Servicios de Salud Rural , Servicios Urbanos de Salud , China , Teoría del Juego , Humanos , Colaboración Intersectorial , Castigo
5.
J Psychiatry Neurosci ; 46(3): E319-E327, 2021 04 27.
Artículo en Inglés | MEDLINE | ID: mdl-33904667

RESUMEN

Background: Selective serotonin reuptake inhibitors (SSRIs) show acute effects on the neural processes associated with negative affective bias in healthy people and people with depression. However, whether and how SSRIs also affect reward and punishment processing on a similarly rapid time scale remains unclear. Methods: We investigated the effects of an acute and clinically relevant dose (20 mg) of the SSRI escitalopram on brain response during reward and punishment processing in 19 healthy participants. In a doubleblind, placebo-controlled study using functional MRI, participants performed a well-established monetary reward task at 3 time points: at baseline; after receiving placebo or escitalopram; and after receiving placebo or escitalopram following an 8-week washout period. Results: Acute escitalopram administration reduced blood-oxygen-level-dependent (BOLD) response during punishment feedback in the right thalamus (family-wise error corrected [FWE] p = 0.013 at peak level) and the right caudate head (pFWE = 0.011 at peak level) compared to placebo. We did not detect any significant BOLD changes during reward feedback. Limitations: We included only healthy participants, so interpretation of findings are limited to the healthy human brain and require future testing in patient populations. The paradigm we used was based on monetary stimuli, and results may not be generalizable to other forms of reward. Conclusion: Our findings extend theories of rapid SSRI action on the neural processing of rewarding and aversive stimuli and suggest a specific and acute effect of escitalopram in the punishment neurocircuitry.


Asunto(s)
Núcleo Caudado/efectos de los fármacos , Escitalopram/administración & dosificación , Escitalopram/farmacología , Neuronas/efectos de los fármacos , Castigo , Recompensa , Tálamo/efectos de los fármacos , Adulto , Núcleo Caudado/citología , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Inhibidores Selectivos de la Recaptación de Serotonina/administración & dosificación , Inhibidores Selectivos de la Recaptación de Serotonina/farmacología , Tálamo/citología , Adulto Joven
6.
Torture ; 30(1): 66-78, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32657772

RESUMEN

Conversion therapy is a set of practices that aim to change or alter an individual's sexual orientation or gender identity. It is premised on a belief that an individual's sexual orientation or gender identity can be changed and that doing so is a desirable outcome for the individual, family, or community. Other terms used to describe this practice include sexual orientation change effort (SOCE), reparative therapy, reintegrative therapy, reorientation therapy, ex-gay therapy, and gay cure. Conversion therapy is practiced in every region of the world. We have identified sources confirming or indicating that conversion therapy is performed in over 60 countries. In those countries where it is performed, a wide and variable range of practices are believed to create change in an individual's sexual orientation or gender identity. Some examples of these include: talk therapy or psychotherapy (e.g., exploring life events to identify the cause); group therapy; medication (including anti-psychotics, anti- depressants, anti-anxiety, and psychoactive drugs, and hormone injections); Eye Movement Desensitization and Reprocessing (where an individual focuses on a traumatic memory while simultaneously experiencing bilateral stimulation); electroshock or electroconvulsive therapy (ECT) (where electrodes are attached to the head and electric current is passed between them to induce seizure); aversive treatments (including electric shock to the hands and/or genitals or nausea-inducing medication administered with presentation of homoerotic stimuli); exorcism or ritual cleansing (e.g., beating the individual with a broomstick while reading holy verses or burning the individual's head, back, and palms); force-feeding or food deprivation; forced nudity; behavioural conditioning (e.g., being forced to dress or walk in a particular way); isolation (sometimes for long periods of time, which may include solitary confinement or being kept from interacting with the outside world); verbal abuse; humiliation; hypnosis; hospital confinement; beatings; and "corrective" rape. Conversion therapy appears to be performed widely by health professionals, including medical doctors, psychiatrists, psychologists, sexologists, and therapists. It is also conducted by spiritual leaders, religious practitioners, traditional healers, and community or family members. Conversion therapy is undertaken both in contexts under state control, e.g., hospitals, schools, and juvenile detention facilities, as well as in private settings like homes, religious institutions, or youth camps and retreats. In some countries, conversion therapy is imposed by the order or instructions of public officials, judges, or the police. The practice is undertaken with both adults and minors who may be lesbian, gay, bisexual, trans, or gender diverse. Parents are also known to send their children back to their country of origin to receive it. The practice supports the belief that non-heterosexual orientations are deviations from the norm, reflecting a disease, disorder, or sin. The practitioner conveys the message that heterosexuality is the normal and healthy sexual orientation and gender identity. The purpose of this medico-legal statement is to provide legal experts, adjudicators, health care professionals, and policy makers, among others, with an understanding of: 1) the lack of medical and scientific validity of conversion therapy; 2) the likely physical and psychological consequences of undergoing conversion therapy; and 3) whether, based on these effects, conversion therapy constitutes cruel, inhuman, or degrading treatment or torture when individuals are subjected to it forcibly2 or without their consent. This medico-legal statement also addresses the responsibility of states in regulating this practice, the ethical implications of offering or performing it, and the role that health professionals and medical and mental health organisations should play with regards to this practice. Definitions of conversion therapy vary. Some include any attempt to change, suppress, or divert an individual's sexual orientation, gender identity, or gender expression. This medico-legal statement only addresses those practices that practitioners believe can effect a genuine change in an individual's sexual orientation or gender identity. Acts of physical and psychological violence or discrimination that aim solely to inflict pain and suffering or punish individuals due to their sexual orientation or gender identity, are not addressed, but are wholly condemned. This medico-legal statement follows along the lines of our previous publications on Anal Examinations in Cases of Alleged Homosexuality1 and on Forced Virginity Testing.2 In those statements, we opposed attempts to minimise the severity of physical and psychological pain and suffering caused by these examinations by qualifying them as medical in nature. There is no medical justification for inflicting on individuals torture or other cruel, inhuman, or degrading treatment or punishment. In addition, these statements reaffirmed that health professionals should take no role in attempting to control sexuality and knowingly or unknowingly supporting state-sponsored policing and punishing of individuals based on their sexual orientation or gender identity.


Asunto(s)
Terapia Aversiva/métodos , Identidad de Género , Castigo , Conducta Sexual , Tortura , Fármacos del Sistema Nervioso Central , Consenso , Terapia Electroconvulsiva , Femenino , Humanos , Masculino , Psicoterapia
7.
Proc Biol Sci ; 287(1930): 20201036, 2020 07 08.
Artículo en Inglés | MEDLINE | ID: mdl-32605518

RESUMEN

Human groups have long faced ecological threats such as resource stress and warfare, and must also overcome strains on coordination and cooperation that are imposed by growing social complexity. Tightness-looseness (TL) theory suggests that societies react to these challenges by becoming culturally tighter, with stronger norms and harsher punishment of deviant behaviour. TL theory further predicts that tightening is associated with downstream effects on social, political and religious institutions. Here, we comprehensively test TL theory in a sample of non-industrial societies. Since previous studies of TL theory have sampled contemporary countries and American states, our analysis allows us to examine whether the theory generalizes to societies in the ethnographic record and also to explore new correlates of tightness that vary more in non-industrial societies. We find that tightness covaries across domains of social norms, such as socialization, law and gender. We also show that tightness correlates with several theorized antecedents (ecological threat, complexity, residential homogeneity) and several theorized consequences (intergroup contact, political authoritarianism, moralizing religious beliefs). We integrate these findings into a holistic model of tightness in non-industrial societies and provide metrics that can be used by future studies on cultural tightness in the ethnographic record.


Asunto(s)
Cultura , Comparación Transcultural , Humanos , Castigo , Religión , Normas Sociales
8.
PLoS One ; 14(10): e0224093, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31639151

RESUMEN

Evidence of perpetrators' biological or situational circumstances has been increasingly brought to bear in courtrooms. Yet, research findings are mixed as to whether this information influences folk evaluations of perpetrators' dispositions, and subsequently, evaluations of their deserved punishments. Previous research has not clearly dissociated the effects of information about perpetrators' genetic endowment versus their environmental circumstances. Additionally, most research has focused exclusively on violations involving extreme physical harm, often using mock capital sentences cases as examples. To address these gaps in the literature, we employed a "switched-at-birth" paradigm to investigate whether positive or negative information about perpetrators' genetic or environmental backgrounds influence evaluations of a perpetrator's mental states, character, and deserved punishment. Across three studies, we varied whether the transgression involved direct harm, an impure act that caused no harm, or a case of moral luck. The results indicate that negative genetic and environmental backgrounds influenced participants' evaluations of perpetrators' intentions, free will, and character, but did not influence participants' punishment decisions. Overall, these results replicate and extend existing findings suggesting that perpetrators' supposed extenuating circumstances may not mitigate the punishment that others assign to them.


Asunto(s)
Ira/fisiología , Carácter , Conflicto Psicológico , Emociones/fisiología , Relaciones Interpersonales , Salud Mental/estadística & datos numéricos , Castigo/psicología , Adulto , Femenino , Humanos , Masculino , Percepción Social
9.
J Law Med Ethics ; 47(2_suppl): 47-50, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-31298124

RESUMEN

Every day, students from marginalized communities disproportionately face adversity and trauma. It is well documented that exposure to adverse childhood experiences (ACEs) can impact children's ability to focus, learn, and even regulate their emotions. Many schools, rather than providing multi-tiered systems of support to address the root causes of behavior, place these students at greater risk of experiencing health disparities through the use of exclusionary school discipline (ESD) practices. ESDs not only deny students important educational opportunities, but also can compound existing social, economic, and health inequities. Thus, ESD practices must be understood as more than simply impacting what happens in the classroom. Instead, they should be conceptualized as public health policies with far-reaching impacts on a child's lifelong health and well-being. Even though school discipline has largely been overlooked by the public health community, current reform efforts are one aspect of a holistic health justice framework. This article seeks to begin to bridge current gaps in the literature and public discourse by identifying key linkages between ESD practices and health. It then presents evidence-based design principles to ensure education policy is aligned with a health justice framework. And finally, it explores a specific school-based intervention, restorative justice.


Asunto(s)
Equidad en Salud , Castigo/psicología , Instituciones Académicas , Estudiantes/psicología , Niño , Humanos , Salud Pública , Política Pública , Estados Unidos
10.
Neuron ; 102(1): 1-3, 2019 04 03.
Artículo en Inglés | MEDLINE | ID: mdl-30946816

RESUMEN

In this issue of Neuron, Trusel et al. (2019) demonstrate that circuit-specific plasticity in the lateral habenula is dynamically involved in translating CS-US contingencies into cue-driven avoidance behavior. Disruption of this plasticity prevents learning about CS-US relationships when they are uncertain.


Asunto(s)
Habénula , Reacción de Prevención , Señales (Psicología) , Hipotálamo , Plasticidad Neuronal , Castigo , Sinapsis
11.
Int J Clin Exp Hypn ; 67(2): 157-191, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30939083

RESUMEN

So far, only a few studies have investigated how memories of parental rearing style are associated with hypnotic response, and these were either qualitative or confined to the behavioral aspect of hypnotizability. The present study aims to employ standardized, quantitative measures to investigate the associations between recalled parental rearing style and the behavioral, phenomenological, and emotional dimensions of hypnotic response. Two samples of healthy adult subjects (N = 438) completed a questionnaire on their parents' behavior and participated in a standard group hypnosis session in which their hypnotizability score, hypnotic experiences, and archaic involvement were assessed. Memories of cold and punishing parental behavior were associated with negative experiences related to the hypnotic state and negative emotions toward the hypnotist. The authors conclude that assessing parental behavior may be important in planning hypnotherapeutic interventions.


Asunto(s)
Crianza del Niño/psicología , Hipnosis , Recuerdo Mental , Responsabilidad Parental , Adulto , Niño , Estado de Conciencia , Femenino , Humanos , Masculino , Responsabilidad Parental/psicología , Castigo/psicología , Encuestas y Cuestionarios , Adulto Joven
12.
Neuron ; 102(1): 120-127.e4, 2019 04 03.
Artículo en Inglés | MEDLINE | ID: mdl-30765165

RESUMEN

Throughout life, individuals learn to predict a punishment via its association with sensory stimuli. This process ultimately prompts goal-directed actions to prevent the danger, a behavior defined as avoidance. Neurons in the lateral habenula (LHb) respond to aversive events as well as to environmental cues predicting them, supporting LHb contribution to cue-punishment association. However, whether synaptic adaptations at discrete habenular circuits underlie such associative learning to instruct avoidance remains elusive. Here, we find that, in mice, contingent association of an auditory cue (tone) with a punishment (foot shock) progressively causes cue-driven LHb neuronal excitation during avoidance learning. This process is concomitant with the strengthening of LHb AMPA receptor-mediated neurotransmission. Such a phenomenon occludes long-term potentiation and occurs specifically at hypothalamus-to-habenula synapses. Silencing hypothalamic-to-habenulainputs or optically inactivating postsynaptic AMPA receptors within the LHb disrupts avoidance learning. Altogether, synaptic strengthening at a discrete habenular circuit transforms neutral stimuli into salient punishment-predictive cues to guide avoidance.


Asunto(s)
Reacción de Prevención/fisiología , Señales (Psicología) , Habénula/fisiología , Hipotálamo/fisiología , Potenciación a Largo Plazo/fisiología , Castigo , Sinapsis/fisiología , Animales , Aprendizaje por Asociación/fisiología , Masculino , Ratones , Técnicas de Placa-Clamp , Receptores AMPA/antagonistas & inhibidores , Receptores AMPA/fisiología
13.
Pers Soc Psychol Bull ; 45(4): 634-651, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30227773

RESUMEN

Research finds collectivists make external attributions for others' behavior, whereas individualists make internal attributions. By focusing on external causes, collectivists should be less punitive toward those who harm others. Yet, many collectivistic cultures are known for strict retributive justice systems. How can collectivists simultaneously make external attributions and punish so harshly? We hypothesized that unlike individualists whose analytic tendencies engender a focus on mental states where judgments of accountability stem from perceptions of a harm-doer's agency, collectivists' holistic cognitive tendencies engender a focus on social harmony where judgments of accountability stem from perceived social consequences of the harmful act. Thus, what leads collectivists to make external attributions for behavior also leads to harsh punishment of those harming the collective welfare. Four cross-cultural studies found evidence that perceptions of a target's agency more strongly predicted responsibility and punishment judgments for individualists, whereas perceived severity of the harm was stronger for collectivists.


Asunto(s)
Comparación Transcultural , Juicio , Castigo/psicología , Responsabilidad Social , Adulto , China , Femenino , Humanos , Individualidad , Masculino , Estados Unidos , Adulto Joven
14.
Suicide Life Threat Behav ; 49(5): 1290-1306, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-30390328

RESUMEN

OBJECTIVE: The present study aimed to explore the electrophysiological correlates involved in three-dimensional psychological pain and their relationship with suicide in patients with major depressive disorder. METHOD: The sample comprised 23 and nine patients with major depressive disorder with high and low risk for suicide, respectively, and 24 healthy controls. All participants completed the measurements and performed an event-related potential-based analogue of the affective incentive delay task. The event-related potential components previously associated with motivationally salient cue (contingent negative variation, P2, and cue-P3), target (target-P3), and feedback (reward vs. punishment, feedback-related negativity, and feedback-P3) stimuli were examined. RESULTS: All inventory scores differed significantly among the high-risk, low-risk, and healthy control groups. During the expectant phase, the main effect of group and interaction between group and condition was significant in the average amplitudes of the cue-P2 component. During the feedback phase, the feedback-P3 elicited by positive feedback had a significant main effect of group and of the interaction between group and condition. Specifically, the feedback-P3 elicited by negative feedback in the punitive condition showed significant positive correlations with the total and subscale scores on the Three-Dimensional Psychological Pain Scale. CONCLUSIONS: Feedback-P3 may be an electrobiological component underlying the processing of psychological pain in suicidality.


Asunto(s)
Cognición , Trastorno Depresivo Mayor/psicología , Potenciales Evocados , Neurorretroalimentación , Distrés Psicológico , Recompensa , Ideación Suicida , Adulto , Fenómenos Electrofisiológicos/fisiología , Femenino , Humanos , Masculino , Castigo/psicología , Adulto Joven
15.
Child Care Health Dev ; 44(6): 841-849, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30124230

RESUMEN

BACKGROUND: Despite growing evidence that early life experiences and exposures can impact child development, there is limited research on how prenatal and early life nutrition and early life parenting practices predict specific domains of child development in resource-limited settings. This study examines the association between prenatal factors, birth outcomes, and early life characteristics with motor, cognitive/language, and socioemotional development in Tanzania. METHODS: We assessed motor, cognitive/language, and socioemotional development among a cohort of 198 children aged 20-39 months in Dar es Salaam, Tanzania, whose mothers were previously enrolled in a randomized, placebo-controlled trial of prenatal vitamin A and zinc supplementation. Linear regression models were used to assess standardized mean differences in child development scores for randomized prenatal regimen and pregnancy, delivery, and early childhood factors. RESULTS: Children born to mothers randomized to prenatal vitamin A had significantly lower reported motor scores in minimally adjusted and multivariate analyses, -0.29 SD, 95% CI [-0.54, -0.04], p = 0.03, as compared with children whose mothers did not receive vitamin A. There was no significant effect of randomized prenatal zinc on any development domain. Greater caregiver-child stimulation was associated with 0.38 SD, 95% CI [0.14, 0.63], p < 0.01, better cognitive/language scores, whereas children who experienced both verbal and physical punishment had 0.29 SD, 95% CI [-0.52, -0.05], p = 0.02, lower scores in socioemotional development. Maternal completion of primary school was associated with higher reported motor and cognitive/language development. Further, children of mothers who were <155 cm tall had lower cognitive and language scores. CONCLUSION: Prenatal vitamin A supplements in a setting with low levels of vitamin A deficiency may not provide child development benefits. However, integrated environmental, educational, parenting, and stimulation interventions may have large positive effects across child development domains in resource-limited settings.


Asunto(s)
Desarrollo Infantil/fisiología , Suplementos Dietéticos , Educación no Profesional/organización & administración , Fenómenos Fisiologicos Nutricionales Maternos/fisiología , Madres/psicología , Destreza Motora/fisiología , Castigo/psicología , Adulto , Preescolar , Femenino , Encuestas Epidemiológicas , Humanos , Desarrollo del Lenguaje , Masculino , Madres/educación , Embarazo , Efectos Tardíos de la Exposición Prenatal , Medio Social , Tanzanía/epidemiología , Vitamina A/uso terapéutico , Zinc/uso terapéutico
17.
Sci Rep ; 8(1): 5702, 2018 04 09.
Artículo en Inglés | MEDLINE | ID: mdl-29632306

RESUMEN

Mindfulness-based interventions are thought to reduce compulsive behavior such as overeating by promoting behavioral flexibility. Here the main aim was to provide support for mindfulness-mediated improvements in reversal learning, a direct measure of behavioral flexibility. We investigated whether an 8-week mindful eating intervention improved outcome-based reversal learning relative to an educational cooking (i.e., active control) intervention in a non-clinical population. Sixty-five healthy participants with a wide BMI range (19-35 kg/m2), who were motivated to change their eating habits, performed a deterministic reversal learning task that enabled the investigation of reward- and punishment-based reversal learning at baseline and following the intervention. No group differences in reversal learning were observed. However, time invested in the mindful eating, but not the educational cooking intervention correlated positively with changes in reversal learning, in a manner independent of outcome valence. These findings suggest that greater amount of mindfulness practice can lead to increased behavioral flexibility, which, in turn, might help overcome compulsive eating in clinical populations.


Asunto(s)
Conducta Alimentaria/psicología , Hiperfagia/terapia , Atención Plena/métodos , Educación del Paciente como Asunto/métodos , Aprendizaje Inverso , Adulto , Conducta Compulsiva/psicología , Conducta Compulsiva/terapia , Culinaria , Femenino , Voluntarios Sanos , Humanos , Hiperfagia/psicología , Masculino , Persona de Mediana Edad , Castigo , Recompensa , Adulto Joven
19.
Psychophysiology ; 53(8): 1185-92, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27184070

RESUMEN

The reward positivity is a component of the human ERP elicited by feedback stimuli in trial-and-error learning and guessing tasks. A prominent theory holds that the reward positivity reflects a reward prediction error signal that is sensitive to outcome valence, being larger for unexpected positive events relative to unexpected negative events (Holroyd & Coles, 2002). Although the theory has found substantial empirical support, most of these studies have utilized either monetary or performance feedback to test the hypothesis. However, in apparent contradiction to the theory, a recent study found that unexpected physical punishments also elicit the reward positivity (Talmi, Atkinson, & El-Deredy, 2013). The authors of this report argued that the reward positivity reflects a salience prediction error rather than a reward prediction error. To investigate this finding further, in the present study participants navigated a virtual T maze and received feedback on each trial under two conditions. In a reward condition, the feedback indicated that they would either receive a monetary reward or not and in a punishment condition the feedback indicated that they would receive a small shock or not. We found that the feedback stimuli elicited a typical reward positivity in the reward condition and an apparently delayed reward positivity in the punishment condition. Importantly, this signal was more positive to the stimuli that predicted the omission of a possible punishment relative to stimuli that predicted a forthcoming punishment, which is inconsistent with the salience hypothesis.


Asunto(s)
Corteza Cerebral/fisiología , Potenciales Evocados , Retroalimentación Sensorial , Castigo , Recompensa , Adolescente , Adulto , Electroencefalografía , Femenino , Humanos , Masculino , Estimulación Eléctrica Transcutánea del Nervio , Interfaz Usuario-Computador , Adulto Joven
20.
Brain Imaging Behav ; 10(1): 105-14, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25759287

RESUMEN

Social neuroscience studies have shown that the ventral striatum (VS), a highly reward-sensitive brain area, is activated when participants win competitive tasks. However, in these settings winning often entails both avoiding punishment and punishing the opponent. It is thus unclear whether the rewarding properties of winning are mainly associated to punishment avoidance, or if punishing the opponent can be additionally gratifying. In the present paper we explored the neurophysiological correlates of each outcome, aiming to better understand the development of aggression episodes. We previously introduced a competitive reaction time task that separates both effects: in half of the won trials, participants can physically punish their opponent (active trials), whereas in the other half they can only avoid a punishment (passive trials). We performed functional connectivity analysis seeded in the VS to test for differential network interactions in active compared to passive trials. The VS showed greater connectivity with areas involved in reward valuation (orbitofrontal cortex), arousal (dorsal thalamus and posterior insula), attention (inferior occipital gyrus), and motor control (supplementary motor area) in active compared to passive trials, whereas connectivity between the VS and the inferior frontal gyrus decreased. Interindividual variability in connectivity strength between VS and posterior insula was related to aggressive behavior, whereas connectivity between VS and supplementary motor area was related to faster reaction times in active trials. Our results suggest that punishing a provoking opponent when winning might adaptively favor a "competitive state" in the course of an aggressive interaction.


Asunto(s)
Agresión/fisiología , Estriado Ventral/fisiología , Adulto , Mapeo Encefálico , Corteza Cerebral/fisiología , Humanos , Imagen por Resonancia Magnética , Masculino , Vías Nerviosas/fisiología , Pruebas Neuropsicológicas , Castigo , Tiempo de Reacción , Tálamo/fisiología , Adulto Joven
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