Was Darwin Wrong About Emotional Expressions?

2011 ◽  
Vol 20 (6) ◽  
pp. 400-406 ◽  
Author(s):  
Lisa Feldman Barrett
Keyword(s):  
Natural Selection ◽  
Scientific Evidence ◽  
Emotional Expressions ◽  
Basic Emotion ◽  
Scientific Interest ◽  
Alternative Hypotheses ◽  
Expression Of Emotions ◽  
And Function

Emotional expressions have endured as a topic of profound scientific interest for over a century, in part due to Darwin’s classic volume, The Expression of Emotions in Man and Animals. Since its publication, there has been a strong, spirited debate over the origin, nature, and function of emotional expressions. In this article, I consider two basic questions: What did Darwin really write about emotional expressions, and how well does his account match the modern, conventional, “basic emotion” account? And does the scientific evidence specifically support the modern account of Darwin’s view, or are there alternative hypotheses that provide good (or even better) interpretations for the data at hand? I discuss the various ways that Darwin might be correct (and incorrect) about how emotions and their manifestations have been sculpted by natural selection.

scholarly journals Telomere Length and Oxidative Stress and Its Relation with Metabolic Syndrome Components in the Aging

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 253
Author(s):  
Graciela Gavia-García ◽  
Juana Rosado-Pérez ◽  
Taide Laurita Arista-Ugalde ◽  
Itzen Aguiñiga-Sánchez ◽  
Edelmiro Santiago-Osorio ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Telomere Length ◽  
Scientific Evidence ◽  
Telomeric Dna ◽  
Biochemical Alterations ◽  
The Metabolic Syndrome ◽  
Age Related ◽  
And Function

A great amount of scientific evidence supports that Oxidative Stress (OxS) can contribute to telomeric attrition and also plays an important role in the development of certain age-related diseases, among them the metabolic syndrome (MetS), which is characterised by clinical and biochemical alterations such as obesity, dyslipidaemia, arterial hypertension, hyperglycaemia, and insulin resistance, all of which are considered as risk factors for type 2 diabetes mellitus (T2DM) and cardiovascular diseases, which are associated in turn with an increase of OxS. In this sense, we review scientific evidence that supports the association between OxS with telomere length (TL) dynamics and the relationship with MetS components in aging. It was analysed whether each MetS component affects the telomere length separately or if they all affect it together. Likewise, this review provides a summary of the structure and function of telomeres and telomerase, the mechanisms of telomeric DNA repair, how telomere length may influence the fate of cells or be linked to inflammation and the development of age-related diseases, and finally, how the lifestyles can affect telomere length.

scholarly journals Individualized Responses of Gut Microbiota to Dietary Intervention Modeled in Humanized Mice

mSystems ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Samuel A. Smits ◽  
Angela Marcobal ◽  
Steven Higginbottom ◽  
Justin L. Sonnenburg ◽  
Purna C. Kashyap
Keyword(s):  
Gut Microbiota ◽  
Dietary Intervention ◽  
Scientific Evidence ◽  
Marker Gene ◽  
Gastrointestinal Symptoms ◽  
Dietary Interventions ◽  
Inflammatory Bowel ◽  
Irritable Bowel ◽  
And Function ◽  
Generation Sequencing

ABSTRACT Dietary modification has long been used empirically to modify symptoms in inflammatory bowel disease, irritable bowel syndrome, and a diverse group of diseases with gastrointestinal symptoms. There is both anecdotal and scientific evidence to suggest that individuals respond quite differently to similar dietary changes, and the highly individualized nature of the gut microbiota makes it a prime candidate for these differences. To overcome the typical confounding factors of human dietary interventions, here we employ ex-germfree mice colonized by microbiotas of three different humans to test how different microbiotas respond to a defined change in carbohydrate content of diet by measuring changes in microbiota composition and function using marker gene-based next-generation sequencing and metabolomics. Our findings suggest that the same diet has very different effects on each microbiota’s membership and function, which may in turn explain interindividual differences in response to a dietary ingredient. Diet plays an important role in shaping the structure and function of the gut microbiota. The microbes and microbial products in turn can influence various aspects of host physiology. One promising route to affect host function and restore health is by altering the gut microbiome using dietary intervention. The individuality of the microbiome may pose a significant challenge, so we sought to determine how different microbiotas respond to the same dietary intervention in a controlled setting. We modeled gut microbiotas from three healthy donors in germfree mice and defined compositional and functional alteration following a change in dietary microbiota-accessible carbohydrates (MACs). The three gut communities exhibited responses that differed markedly in magnitude and in the composition of microbiota-derived metabolites. Adjustments in community membership did not correspond to the magnitude of changes in the microbial metabolites, highlighting potential challenges in predicting functional responses from compositional data and the need to assess multiple microbiota parameters following dietary interventions. IMPORTANCE Dietary modification has long been used empirically to modify symptoms in inflammatory bowel disease, irritable bowel syndrome, and a diverse group of diseases with gastrointestinal symptoms. There is both anecdotal and scientific evidence to suggest that individuals respond quite differently to similar dietary changes, and the highly individualized nature of the gut microbiota makes it a prime candidate for these differences. To overcome the typical confounding factors of human dietary interventions, here we employ ex-germfree mice colonized by microbiotas of three different humans to test how different microbiotas respond to a defined change in carbohydrate content of diet by measuring changes in microbiota composition and function using marker gene-based next-generation sequencing and metabolomics. Our findings suggest that the same diet has very different effects on each microbiota’s membership and function, which may in turn explain interindividual differences in response to a dietary ingredient. Author Video: An author video summary of this article is available.

Romantic Passion as Output from a Self-Regulating, Intimacy-Seeking System: A Model for Understanding Passionate Love

2005 ◽  
Vol 96 (3) ◽  
pp. 655-675 ◽  
Author(s):  
Adam B. Troy
Keyword(s):  
Intimate Relationships ◽  
Present Model ◽  
Self Regulation ◽  
Personality Theory ◽  
Basic Emotion ◽  
Passionate Love ◽  
System A ◽  
Romantic Passion ◽  
Regulation Model ◽  
And Function

This article presents a model of why individuals experience the feeling of passionate love in intimate relationships. Previous models have been limited because they do not describe the purpose and function of passionate love, do not incorporate basic emotion and personality theory, or are not applicable to help couples in distress. The present model reinterprets and integrates previous findings. New predictions are made about the functioning of passionate love in relationships by hypothesizing a self-regulating, intimacy-seeking system that produces passionate love as its outcome. A self-regulation model proposed by Carver and Scheier in 1998 is the template on which this model is based.

scholarly journals De la neuroplasticidad a las propuestas aplicadas: estimulación temprana y su implementación en Costa Rica / From Neuroplasticity to Applied Proposals: Early Stimulation and Its Implementation in Costa Rica

2016 ◽  
Vol 35 (2) ◽  
pp. 159
Author(s):  
Johanna Sibaja-Molina ◽  
Tracy Sánchez-Pacheco ◽  
Mijail Rojas-Carvajal ◽  
Jaime Fornaguera-Trías
Keyword(s):  
Costa Rica ◽  
Empirical Evidence ◽  
Developmental Psychology ◽  
Brain Plasticity ◽  
Environmental Influence ◽  
Scientific Evidence ◽  
Early Stimulation ◽  
Professional Experiences ◽  
Context Manipulation ◽  
And Function

<p><em><strong>Español</strong></em></p><p>La discusión en torno a la influencia del ambiente sobre la ontogenia ha alimentado la interrogante sobre cuál es el grado en el que, a través de la manipulación del contexto, se modifican las características de los individuos. Actualmente, la evidencia científica desde distintos campos (e.g., Psicología del desarrollo, Neurociencias) describe cómo el ambiente es capaz de modular los procesos del desarrollo y las distintas capacidades del cerebro, así como los mecanismos plásticos que subyacen a dicha modulación. Con base en esta evidencia, distintas aproximaciones metodológicas orientadas a la estimulación temprana (ET) se han propuesto potenciar el desarrollo o remediar problemas que se presentan durante las etapas tempranas del ciclo vital. En este contexto, se brinda una revisión del tema y se ofrece un marco teórico general sobre los antecedentes y sobre los principios que sustentan la estimulación del sistema nervioso (i.e., plasticidad cerebral). Además, a través de una aproximación empírica y un proceso de revisión bibliográfica, se presenta la evidencia disponible de algunos de los métodos de mayor conocimiento/uso en Costa Rica (i.e., Doman Delacato, Snoezelen®, Point y Bebé Políglota). Al recapitular los alcances y las limitaciones de la ET, se concluye que es necesario sistematizar las experiencias profesionales de forma tal que permitan abrir un debate académico sobre el tema.  </p><p><em><strong>English</strong></em></p><p><span>The discussion about environmental influence on ontogeny has fueled the question about how much context manipulation can regulate individuals’ characteristics. Today, scientific evidence from different fields (e.g., developmental psychology, neuroscience) describes not only how environment can modulate brain development and function, but also the plastic mechanisms involved. In consequence, different methodological approximations of early stimulation (ES) have arisen, although they are not necessarily based on solid empirical evidence. In this context, a brief approximation to the ES background is provided, as well as a general framework about brain plasticity. In addition, the theoretical and practical perspective of the ES practitioners is also described by detailing the empirical evidence around its most known/used variants in Costa Rica (i.e., Doman-Delacato, Snoezelen®, Point and Bebé políglota). Finally, bringing up the scope and limitations of ES, we conclude that the professional experiences need to be systematized, in order to open an academic debate on the subject.</span></p>

scholarly journals Evolutionary origins of sexual dimorphism : Lessons from female-limited mimicry in butterflies.

2021 ◽  
Author(s):  
Ludovic Maisonneuve ◽  
Charline Smadi ◽  
Violaine LLAURENS
Keyword(s):  
Natural Selection ◽  
Female Preference ◽  
Sympatric Species ◽  
Sexually Dimorphic ◽  
Complex Interplay ◽  
Developmental Constraints ◽  
Text Book ◽  
Male And Female ◽  
Evolutionary Origins ◽  
Alternative Hypotheses

The surprising female-limited mimicry observed in some species is a text-book example of sexually-dimorphic trait submitted to intense natural selection. Two main hypotheses have been proposed to explain female-limited mimicry in butterflies. Predation pressure favouring mimicry could be higher in females because of their slower flight, and overcome developmental constraints favouring the ancestral trait that limits the evolution of mimicry in males but not in females. Alternatively, the evolution of mimicry in males could be limited by sexual selection, generated by females preference for non-mimetic males. However, the evolutionary origin of female preference for non-mimetic males remains unclear. Here, we hypothesise that costly sexual interactions between individuals from distinct sympatric species might intensify because of mimicry, therefore promoting female preference for non-mimetic trait. Using a mathematical model, we compare the evolution of female-limited mimicry when assuming either alternative hypotheses. We show that the patterns of divergence of male and female trait from the ancestral traits can differ between these selection regimes but we specifically highlight that divergence in females trait is not a signature of the effect of natural selection. Altogether, our model reveals the complex interplay between sexual and natural selection shaping the evolution of sexually-dimorphic traits.

scholarly journals EKSPRESI EMOSI KELUARGA YANG MERAWAT PASIEN SKIZOFRENIA

2020 ◽  
Vol 6 (2) ◽  
pp. 117-122
Author(s):  
Jek Amidos Pardede
Keyword(s):  
Mental Hospital ◽  
Family Members ◽  
Sampling Technique ◽  
Emotional Expressions ◽  
Validity And Reliability ◽  
Cross Sectional ◽  
The Family ◽  
Schizophrenic Patients ◽  
Expression Of Emotions ◽  
The Individual

Expression of emotions in the family can be an expression that reflects the high expression of negative emotions. Expressions of high emotion show an attitude that is full of criticism and hatred. It arises when parents or other family members assume that the disorder is influenced by internal factors and must be controlled by the individual. This study aims to determine the emotional expression of the family of schizophrenic patients in the mental hospital. Prof. dr. Muhammad Ildrem Medan. The research design used was descriptive with a cross-sectional approach. The population in this study were all families who have family members with outpatient schizophrenia patients at Prof. dr. Muhammad Ildrem Mental Hospital in Medan as many as 900 people. The sample of this research is 90 families. The sampling technique uses purposive sampling. The data collection tool used a questionnaire of 18 statements that had been tested for validity and reliability. The results showed the majority of respondents who treated patients had low emotional expressions, and the majority of respondents who treated more than one patient had high emotional expressions. Therefore, this research is expected to give attention to the families of sick family members to assist them in healing their illnesses.

The Emotional Experiences of Paralympic Swimming Medalists: Not All Wins and Losses Are Equal

2020 ◽  
pp. 1-17
Author(s):  
Jeffrey Martin
Keyword(s):  
Effect Sizes ◽  
Emotional Expressions ◽  
Basic Emotion ◽  
Emotional Experiences ◽  
Theoretical Support ◽  
Emotion Theory ◽  
World Ranking

The goal of this study was to determine if emotional expressions at the end of swimmers’ 2016 Paralympic races varied according to medal won and if their race wins and losses were close or not close. Using FaceReader software, videos of 46 races of medal-winning Paralympic (M age = 24.6; SD = 5.4) swimmers’ faces (78 males and 60 females) from 22 countries were analyzed. Silver medalists were angrier and sadder than gold medalists and angrier and more disgusted than bronze medalists. Swimmers who swam slower than their 2015 best time were angrier than Paralympians who swam faster. Paralympians who finished lower than their 2015 world ranking had more neutral emotions and were less happy than Paralympians who finished higher. Gold medalists who narrowly defeated silver medalists were less happy and more fearful than gold medalists who won easily. Bronze medalists with close wins had fewer neutral emotions and were happier, less angry, and more surprised than bronze medalists with not-close wins. All medalists with close wins were more surprised than medalists with easier wins. Bronze medalists with close losses to silver medalists were happier and less angry than bronze medalists who lost more easily. Effect sizes ranged from d = 0.27 to 1.01. These results provide theoretical support to basic emotion theory and confirm the anecdotal observations that Paralympic competition generates wide-ranging and diverse emotions.

scholarly journals Preadaptation, natural selection and function

1991 ◽  
Vol 11 (1-2) ◽  
pp. 63-65 ◽  
Author(s):  
Philip Lieberman
Keyword(s):  
Natural Selection ◽  
And Function

The developmental roots of consciousness and emotional experience

2000 ◽  
Vol 1 (1) ◽  
pp. 55-89
Author(s):  
Thomas C. Dalton
Keyword(s):  
Infant Development ◽  
Charles Darwin ◽  
William James ◽  
Emotional Experience ◽  
Experimental Studies ◽  
Developmental Theory ◽  
Moral Judgments ◽  
Evolutionary Origins ◽  
Expression Of Emotions ◽  
And Function

Charles Darwin is generally credited with having formulated the first systematic attempt to explain the evolutionary origins and function of the expression of emotions in animals and humans. His ingenious theory, however, was burdened with popular misconceptions about human phylogenetic heritage and bore the philosophical and theoretical deficiencies of the brain science of his era that his successors strove to overcome. In their attempts to rectify Darwin’s errors, William James, James Mark Baldwin and John Dewey each made important contributions to a theory of emotion, which attempted to put it on a more secure philosophical and scientific footing. My contention is that Dewey and his collaborator, infant experimentalist Myrtle McGraw, succeeded where their contemporaries failed. They pointed the way out of the morass of recapitulationism, and showed how a developmental theory of consciousness, mind and emotion could be formulated that avoided the epistemological and ontological pitfalls of Darwin’s theory. Drawing on an extensive body of research from contemporary experimental studies of infant development, this essay attempts to put the questions raised by these historical figures about the structure, function and value of emotions in a theoretical framework. A developmental theory is proposed about the complex, interacting neurobiological and neurobehavioral factors that contribute to human emotional development. This theory identifies the possible relationships among emotions, consciousness and mind and how their co-development influences the capacity of young children to form moral judgments.

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