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Polo P, Fajardo G, Muñoz-Reyes JA, Valenzuela NT, Belinchón M, Figueroa O, Fernández-Martínez A, Deglín M, Pita M. The role of exogenous testosterone and social environment on the expression of sociosexuality and status-seeking behaviors in young Chilean men. Horm Behav 2024; 161:105522. [PMID: 38447330 DOI: 10.1016/j.yhbeh.2024.105522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 01/14/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024]
Abstract
Testosterone plays an important role as a social hormone. Current evidence suggests that testosterone is positively related to sociosexuality increasing the psychological attitudes toward investing in short-term versus long-term mating and promotes status-seeking behaviors both by dominance and prestige. In addition, the social environment may play an important role in the expression of mating effort through changes in sociosexuality and status-seeking behaviors. However, the causal relationships among the mentioned variables are still debated. We employed a double-blind, placebo-controlled within-individual design, in order to test and integrate the proposed causal relationships between testosterone and social environment over short-term and long-term mating orientation and dominant and prestigious status-seeking behaviors in a sample of 95 young Chilean men. We did not find evidence that the administration of exogenous testosterone increased short-term or decreased long-term mating orientation as expected. Moreover, exogenous testosterone did not affect either aggressive or cooperative behavior failing to support the social status hypothesis. We also did not find any relationship between short or long-term mating orientation with status-seeking behaviors. Finally, we found support for the effect of social environment on sociosexual attitudes but not over status-seeking behaviors. Thus, men reported higher levels of short-term mating orientation in the presence of a woman compared to a man and no differences were found for long-term mating orientation. We argue that sociosexuality may be expressed flexibly, but contextual factors such as the presence of women seem more important than changes in testosterone levels.
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Affiliation(s)
- Pablo Polo
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile.
| | - Gabriela Fajardo
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile; Facultad de Administración y Economía, Universidad de Santiago de Chile, Santiago, Chile
| | - Jose Antonio Muñoz-Reyes
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Nohelia T Valenzuela
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Montserrat Belinchón
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Oriana Figueroa
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | | | - Marcel Deglín
- Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile; Hospital Carlos van Buren, Valparaíso, Chile; Clínica Ciudad del Mar, Viña del Mar, Chile
| | - Miguel Pita
- Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain
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2
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Muñoz-Reyes JA, Torrico-Bazoberry D, Polo P, Figueroa O, Guzmán-Lavín E, Fajardo G, Valenzuela N, Belinchón M, Rodríguez-Sickert C, Pita M. Evidence of the active participation of women in the intergroup conflict based on the use of aggression and cooperation. Sci Rep 2023; 13:17742. [PMID: 37853104 PMCID: PMC10584941 DOI: 10.1038/s41598-023-45012-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/14/2023] [Indexed: 10/20/2023] Open
Abstract
Intergroup conflict has been a persistent aspect of human societies since the emergence of our species. Various researchers have proposed that competition between groups has acted as a key selective force throughout human evolutionary history. Such intergroup competition for limited resources exacerbated the expression of intergroup aggression and intragroup cooperation. Furthermore, it would have a sexual dimorphism, with men demonstrating increased sensitivity to conflict threats-in order to maximize reproductive opportunities-, while women generally reject from active engagement in intergroup conflict. In the present study, we conducted behavioral experiments under controlled laboratory conditions to measure cooperation and aggression from using virtual games, specifically the Public Good Games and the Point Subtraction Aggression Paradigm, in a sample of 541 participants. We created control and experimental intergroup competition scenarios, where aggression and cooperation were necessary to increase monetary rewards. Our results shows that men modulate aggression and cooperation in the presence of intergroup conflict. In addition, our data also reveals that women cooperate more than men and display heightened levels of cooperation and aggression when confronted with intergroup conflict. These findings prompt a reevaluation of current functional theoretical models concerning the role of women in intergroup conflict and suggest that the dynamics of human aggression and cooperation may be more nuanced than previously believed.
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Affiliation(s)
- José Antonio Muñoz-Reyes
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile.
| | - Daniel Torrico-Bazoberry
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Pablo Polo
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Oriana Figueroa
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Eugenio Guzmán-Lavín
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Gabriela Fajardo
- Facultad de Administración y Economía, Universidad de Santiago, Santiago, Chile
| | - Nohelia Valenzuela
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Montserrat Belinchón
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Carlos Rodríguez-Sickert
- Laboratorio de Comportamiento Animal y Humano, Centro de Investigación en Complejidad Social, Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile
| | - Miguel Pita
- Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain
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3
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Gresky J, Bietak M, Petiti E, Scheffler C, Schultz M. First osteological evidence of severed hands in Ancient Egypt. Sci Rep 2023; 13:5239. [PMID: 37002337 PMCID: PMC10066219 DOI: 10.1038/s41598-023-32165-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/23/2023] [Indexed: 04/03/2023] Open
Abstract
For the first time, the severed right hands of 12 individuals have been analysed osteologically. The hands were deposited in three pits within a courtyard in front of the throne room of a 15th Dynasty (c.1640-1530 BC) Hyksos palace at Avaris/Tell el-Dab'a in north-eastern Egypt. Although this kind of practice is known from tomb or temple inscriptions and reliefs from the New Kingdom onwards, this is the first time that physical evidence has been used to learn more about the procedure and the individuals whose hands were taken. Here, we show that the right hands belonged to at least 12 adults, 11 males, and possibly one female. It is unclear if the hands were taken from dead or living individuals. After removing any attached parts of the forearm, the hands were placed in the ground with wide-splayed fingers, mainly on their palmar sides. The osteological analysis not only supports the archaeological interpretation of this evidence but also adds more detail regarding trophy-taking practices in Ancient Egypt.
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Affiliation(s)
- Julia Gresky
- Division of Natural Sciences, German Archaeological Institute, Im Dol 2-6, 14195, Berlin, Germany.
| | - Manfred Bietak
- Austrian Archaeological Institute, Austrian Academy of Sciences, Dr. Ignaz Seipel-Platz 2, 1010, Vienna, Austria
| | - Emmanuele Petiti
- Division of Natural Sciences, German Archaeological Institute, Im Dol 2-6, 14195, Berlin, Germany
| | | | - Michael Schultz
- Institute of Anatomy and Embryology, Göttingen University Medical School, Kreuzbergring 36, 37075, Göttingen, Germany
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4
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Kociuba M, Ignasiak Z, Rokita A, Cichy I, Dudkowski A, Ściślak M, Kochan K, Sebastjan A, Spinek A, Lorek D, Bogin B, Chakraborty R, Koziel S. Level of oxytocin prior to rugby and handball matches: An exploratory study among groups of Polish players. AR 2023; 85:83-94. [DOI: 10.18778/1898-6773.85.4.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The aim of the present exploratory study was to assess the changes in urinary oxytocin (OT) concentration during the period between five days before, and on the day of match, among rugby and handball players. Nine male rugby players with a mean age of 27.62 years (SD = 4.21) and 18 male handball players with a mean age of 17.03 years (SD = 0.57) participated. Urinary oxytocin level was measured by ELISA immunoassay as a ratio to the concentration of creatinine [mg/ml] measured through colorimetric detection. The relative level of OT to creatinine (OT/CRE) significantly differed between the type of player (rugby or handball) but not between times of measurements. Significant differences were only between OT/CRE level in a day of match in rugby players and in 5 days before match in handball players (p<0.05). There was no change in oxytocin levels during the time periods between five days before and on the day of a match, in either of the two kinds of players. The change in oxytocin might be traceable during the match but not before a match and this perhaps depends on a more subtle context of competition, but not on the assumption of competition. Further studies are needed based on more homogenous group with higher number of matches.
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5
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Aung T, Baek S, Puts D. Sex differences are insufficient evidence of ecological adaptations in human females. Behav Brain Sci 2022; 45:e130. [PMID: 35875966 DOI: 10.1017/S0140525X22000541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Benenson et al. postulate that human females evolved unique survival adaptations to facilitate maternal and grandmaternal care. This hypothesis is consistent with the broader hypothesis that female phenotypes are more ecologically optimal, but further evidence is needed to make a compelling case that sex differences in self-protection are not primarily the result of more intense sexual selection on males.
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6
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Smith JE, Fichtel C, Holmes RK, Kappeler PM, van Vugt M, Jaeggi AV. Sex bias in intergroup conflict and collective movements among social mammals: male warriors and female guides. Philos Trans R Soc Lond B Biol Sci 2022; 377:20210142. [PMID: 35369756 DOI: 10.1098/rstb.2021.0142] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Intergroup conflict is a major evolutionary force shaping animal and human societies. Males and females should, on average, experience different costs and benefits for participating in collective action. Specifically, among mammals, male fitness is generally limited by access to mates whereas females are limited by access to food and safety. Here we analyse sex biases among 72 species of group-living mammals in two contexts: intergroup conflict and collective movements. Our comparative phylogenetic analyses show that the modal mammalian pattern is male-biased participation in intergroup conflict and female-biased leadership in collective movements. However, the probability of male-biased participation in intergroup conflicts decreased and female-biased participation increased with female-biased leadership in movements. Thus, female-biased participation in intergroup conflict only emerged in species with female-biased leadership in collective movements, such as in spotted hyenas and some lemurs. Sex differences are probably attributable to costs and benefits of participating in collective movements (e.g. towards food, water, safety) and intergroup conflict (e.g. access to mates or resources, risk of injury). Our comparative review offers new insights into the factors shaping sex bias in leadership across social mammals and is consistent with the 'male warrior hypothesis' which posits evolved sex differences in human intergroup psychology. This article is part of the theme issue 'Intergroup conflict across taxa'.
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Affiliation(s)
- Jennifer E Smith
- Biology Department, Mills College, 5000 MacArthur Boulevard, Oakland, CA 94631, USA
| | - Claudia Fichtel
- Behavioral Ecology and Sociobiology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Rose K Holmes
- Biology Department, Mills College, 5000 MacArthur Boulevard, Oakland, CA 94631, USA
| | - Peter M Kappeler
- Behavioral Ecology and Sociobiology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany.,Department Anthropology/Sociobiology, University of Göttingen, Göttingen, Germany
| | - Mark van Vugt
- Department of Experimental and Applied Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Adrian V Jaeggi
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
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7
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Valenzuela NT, Ruiz-pérez I, Rodríguez-sickert C, Polo P, Muñoz-reyes JA, Yeste-lizán A, Pita M. The Relationship between Androgen Receptor Gene Polymorphism, Aggression and Social Status in Young Men and Women. Behav Sci (Basel) 2022; 12:42. [PMID: 35200293 PMCID: PMC8869512 DOI: 10.3390/bs12020042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/26/2022] [Accepted: 02/04/2022] [Indexed: 02/05/2023] Open
Abstract
In both sexes, aggression has been described as a critical trait to acquire social status. Still, almost uniquely in men, the link between aggressiveness and the genetic background of testosterone sensitivity measured from the polymorphism in the androgen receptor (AR) gene has been previously investigated. We assessed the relevance of the AR gene to understand aggression and how aggressiveness affects social status in a cross-sectional study of 195 participants, for the first time in both young men and women. We estimated polymorphism sequences from saliva and measured aggression and self-perceived social status. Unfortunately, the results did not support our prediction because we did not find any of the expected relationships. Therefore, the results suggest that the genetic association between aggressive mechanisms and polymorphism of the AR gene is less straightforward than expected, at least in men, and seems to indicate that aggression is not usually used to gain social status in our population.
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8
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Hosťovecký M, Riegert J, Pazda A, Prokop P. Skin Conductivity Responses to Images of War and Sports in Men and Women: An Evolutionary Perspective. Adaptive Human Behavior and Physiology 2022. [DOI: 10.1007/s40750-022-00186-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Polo P, Muñoz-reyes JA, Valenzuela N, Cid-jofré V, Ramírez-herrera O, Pavez P. Are facial width-to-height ratio, 2D:4D digit ratio and skeletal muscle mass related to men dominant behavior in the Chicken Game? Personality and Individual Differences 2022; 184:111209. [DOI: 10.1016/j.paid.2021.111209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Pighin S, Byrne RMJ, Tentori K. “If only” counterfactual thoughts about cooperative and uncooperative decisions in social dilemmas. Thinking & Reasoning 2021. [DOI: 10.1080/13546783.2021.1961859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Stefania Pighin
- Center for Mind/Brain Sciences - CIMeC, University of Trento, Rovereto, TN, Italy
| | - Ruth M. J. Byrne
- School of Psychology and Institute of Neuroscience, Trinity College Dublin, University of Dublin, Dublin, Ireland
| | - Katya Tentori
- Center for Mind/Brain Sciences - CIMeC, University of Trento, Rovereto, TN, Italy
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11
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Abstract
Psychological sex differences have been studied scientifically for more than a century, yet linguists still debate about the existence, magnitude, and causes of such differences in language use. Advances in psychology and cognitive neuroscience have shown the importance of sex and sexual orientation for various psychobehavioural traits, but the extent to which such differences manifest in language use is largely unexplored. Using computerised text analysis (Linguistic Inquiry and Word Count: LIWC 2015), this study found substantial psycholinguistic sexual dimorphism in a large corpus of English-language novels (n = 304) by heterosexual authors. The psycholinguistic sex differences largely aligned with known psychological sex differences, such as empathising–systemising, people–things orientation, and men’s more pronounced spatial cognitive styles and abilities. Furthermore, consistent with predictions from cognitive neuroscience, novels (n = 158) by lesbian authors showed minor signs of psycholinguistic masculinisation, while novels (n = 167) by homosexual men had a female-typical psycholinguistic pattern, supporting the gender shift hypothesis of homosexuality. The findings on this large corpus of 66.9 million words indicate how psychological group differences based on sex and sexual orientation manifest in language use in two centuries of literary art.
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Affiliation(s)
- Severi Luoto
- English, Drama and Writing Studies, The University of Auckland, Auckland, New Zealand.,School of Psychology, The University of Auckland, Auckland, New Zealand
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12
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Hodges-Simeon CR, Albert G, Richardson GB, McHale TS, Weinberg SM, Gurven M, Gaulin SJC. Was facial width-to-height ratio subject to sexual selection pressures? A life course approach. PLoS One 2021; 16:e0240284. [PMID: 33711068 PMCID: PMC7954343 DOI: 10.1371/journal.pone.0240284] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 01/16/2021] [Indexed: 11/23/2022] Open
Abstract
Sexual selection researchers have traditionally focused on adult sex differences; however, the schedule and pattern of sex-specific ontogeny can provide insights unobtainable from an exclusive focus on adults. Recently, it has been debated whether facial width-to-height ratio (fWHR; bi-zygomatic breadth divided by midface height) is a human secondary sexual characteristic (SSC). Here, we review current evidence, then address this debate using ontogenetic evidence, which has been under-explored in fWHR research. Facial measurements were collected from 3D surface images of males and females aged 3 to 40 (Study 1; US European-descent, n = 2449), and from 2D photographs of males and females aged 7 to 21 (Study 2; Bolivian Tsimane, n = 179), which were used to calculate three fWHR variants (which we call fWHRnasion, fWHRstomion, and fWHRbrow) and two other common facial masculinity ratios (facial width-to-lower-face-height ratio, fWHRlower, and cheekbone prominence). We test whether the observed pattern of facial development exhibits patterns indicative of SSCs, i.e., differential adolescent growth in either male or female facial morphology leading to an adult sex difference. Results showed that only fWHRlower exhibited both adult sex differences as well as the classic pattern of ontogeny for SSCs-greater lower-face growth in male adolescents relative to females. fWHRbrow was significantly wider among both pre- and post-pubertal males in the Bolivian Tsimane sample; post-hoc analyses revealed that the effect was driven by large sex differences in brow height, with females having higher placed brows than males across ages. In both samples, all fWHR measures were inversely associated with age; that is, human facial growth is characterized by greater relative elongation in the mid-face and lower face relative to facial width. This trend continues even into middle adulthood. BMI was also a positive predictor of most of the ratios across ages, with greater BMI associated with wider faces. Researchers collecting data on fWHR should target fWHRlower and fWHRbrow and should control for both age and BMI. Researchers should also compare ratio approaches with multivariate techniques, such as geometric morphometrics, to examine whether the latter have greater utility for understanding the evolution of facial sexual dimorphism.
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Affiliation(s)
- Carolyn R Hodges-Simeon
- Department of Anthropology, Boston University, Boston, Massachusetts, United States of America
| | - Graham Albert
- Department of Anthropology, Boston University, Boston, Massachusetts, United States of America
| | - George B Richardson
- School of Human Services, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Timothy S McHale
- Department of Anthropology, Boston University, Boston, Massachusetts, United States of America
- Department of Anthropology and Museum Studies, Central Washington University, Ellensburg, Washington, United States of America
| | - Seth M Weinberg
- Center for Craniofacial and Dental Genetics, Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Anthropology, Dietrich School of Arts and Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Michael Gurven
- Department of Anthropology, University of California, Santa Barbara, California, United States of America
| | - Steven J C Gaulin
- Department of Anthropology, University of California, Santa Barbara, California, United States of America
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13
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Giacolini T, Conversi D, Alcaro A. The Brain Emotional Systems in Addictions: From Attachment to Dominance/Submission Systems. Front Hum Neurosci 2021; 14:609467. [PMID: 33519403 PMCID: PMC7843379 DOI: 10.3389/fnhum.2020.609467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/22/2020] [Indexed: 12/03/2022] Open
Abstract
Human development has become particularly complex during the evolution. In this complexity, adolescence is an extremely important developmental stage. Adolescence is characterized by biological and social changes that create the prerequisites to psychopathological problems, including both substance and non-substance addictive behaviors. Central to the dynamics of the biological changes during adolescence are the synergy between sexual and neurophysiological development, which activates the motivational/emotional systems of Dominance/Submission. The latter are characterized by the interaction between the sexual hormones, the dopaminergic system and the stress axis (HPA). The maturation of these motivational/emotional systems requires the integration with the phylogenetically more recent Attachment/CARE Systems, which primarily have governed the subject's relationships until puberty. The integration of these systems is particularly complex in the human species, due to the evolution of the process of competition related to sexual selection: from a simple fight between two individuals (of the same genus and species) to a struggle for the acquisition of a position in rank and the competition between groups. The latter is an important evolutionary acquisition and believed to be the variable that has most contributed to enhancing the capacity for cooperation in the human species. The interaction between competition and cooperation, and between competition and attachment, characterizes the entire human relational and emotional structure and the unending work of integration to which the BrainMind is involved. The beginning of the integration of the aforementioned motivational/emotional systems is currently identified in the prepubertal period, during the juvenile stage, with the development of the Adrenarche-the so-called Adrenal Puberty. This latter stage is characterized by a low rate of release of androgens, the hormones released by the adrenal cortex, which activate the same behaviors as those observed in the PLAY system. The Adrenarche and the PLAY system are biological and functional prerequisites of adolescence, a period devoted to learning the difficult task of integrating the phylogenetically ancient Dominance/Submission Systems with the newer Attachment/CARE Systems. These systems accompany very different adaptive goals which can easily give rise to mutual conflict and can in turn make the balance of the BrainMind precarious and vulnerable to mental suffering.
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Affiliation(s)
- Teodosio Giacolini
- Department of Human Neuroscience, Sapienza University of Rome, Rome, Italy
| | - David Conversi
- Department of Psychology, Sapienza University of Rome, Rome, Italy
| | - Antonio Alcaro
- Department of Psychology, Sapienza University of Rome, Rome, Italy
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14
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Søegaard EGI, Kan Z, Koirala R, Hauff E, Thapa SB. Gender differences in a wide range of trauma symptoms after victimization and accidental traumas: a cross-sectional study in a clinical setting. Eur J Psychotraumatol 2021; 12:1975952. [PMID: 34603637 PMCID: PMC8480565 DOI: 10.1080/20008198.2021.1975952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND There are large gender differences in PTSD prevalence. Gender differences in a wide range of trauma symptoms including disturbances in self-organization have not been extensively researched. OBJECTIVE To explore gender differences in a wide range of trauma symptoms by comparing victimization trauma (VT) with accidental trauma (AT). METHOD A cross-sectional study of 110 traumatized patients attending a mental health outpatient clinic in Oslo, Norway (38.2% men, Mage = 40.4, 40% ethnic Norwegians). The trauma was categorized as VT or AT based on the Life Events Checklist. The Structured Clinical Interview for DSM-IV-PTSD-module and Structured Interview for Disorders of Extreme Stress Not-Otherwise-Specified (DESNOS) assessed a wide range of trauma symptoms. First, we examined gender differences within the trauma categories, then MANCOVA for an adjusted two-by-two between-groups analysis. RESULTS Among VT patients, men reported more symptoms of alteration of negative self-perception (p = .02, ES = 0.50) and alteration in systems of meaning (p < .01, ES = 1.04). Within the AT group, women reported more symptoms of affect and impulses (p = .01, ES = 0.94). The VT-AT difference was significantly higher in men in intrusion (p < .01, η2 = 0.04), affect and impulses (p < .01, η2 = 0.12), negative self-perception (p < .01, η2 = 0.11), difficulty in relations (p = .01, η2 = 0.10) and alterations in systems of meaning (p = .01, η2 = 0.14). Conclusion: Comparing the VT-AT differences between the genders, men with VT had relatively more symptoms of intrusion, self-organization, identity, ideology/meaning, cognition, and relations difficulties. Effect sizes were moderate to large. Men may be relatively more vulnerable to VT than AT, while women may be more equally affected by VT and AT. Acknowledging possible gender differences in a wider range of trauma symptoms depending on trauma category may have clinical benefits.
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Affiliation(s)
- Erik Ganesh Iyer Søegaard
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.,Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Zhanna Kan
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Rishav Koirala
- Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Brain and Neuroscience center, Kathmandu, Nepal
| | - Edvard Hauff
- Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Suraj Bahadur Thapa
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.,Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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