scholarly journals Gene-environment interactions in other-race face recognition: Early caregiving experience and oxytocin receptor genotype interact to increase speed of other-race categorization

2020 ◽  
Author(s):  
Michelle Jin Yee Neoh ◽  
Setoh Peipei ◽  
Andrea Bizzego ◽  
Moses Tandiono ◽  
Jia Nee Foo ◽  
...  
Keyword(s):  
Face Recognition ◽  
Receptor Gene ◽  
Oxytocin Receptor ◽  
The Other ◽  
Environment Interaction ◽  
Oxytocin Receptor Gene ◽  
Interracial Contact ◽  
Gene Environment Interaction ◽  
Gene Environment

The other-race face recognition deficit is a robust finding in the literature on facial processing in humans. Although previous models of the other-race effect have proposed the role of experience and interracial contact, genetics have not been examined in the context of other-race face recognition. The aim of this study was to investigate the gene-environment interaction between early caregiving experience and oxytocin receptor gene genotypes with other-race face recognition in adults. Eighty-nineSingaporean adults gave information on their early caregiving experiences with own- and other-race caregivers and genotyping of their oxytocin receptor gene (rs53576) was also conducted. Participants completed a visual categorization task where they identified the race of a face (Chinese or Javanese) and their categorization response time was measured. A significant main effect of early caregiving experience was found where reaction time was significantly slower in individuals with no other-racecaregiving experience than individuals with other-race caregiving experience. In addition, only non-G carriers of rs53576 without other-race caregiving experience had a significantly slower reaction time compared to non-G carriers with other-race caregivers. This was not observed in G carriers, indicating a gene-environment interaction. These results highlight the role of early interracial contact on other-race face recognition and its interaction with genetics. Future studies can employ a longitudinaldesign for further insight into this gene-environment interaction across development.

scholarly journals Gene-environment interactions in face categorisation: experience with a nanny and oxytocin receptor genotype interact to reduce face categorization reaction times

2020 ◽  
Author(s):  
Michelle Jin Yee Neoh ◽  
Peipei Setoh ◽  
Andrea Bizzego ◽  
Moses Tandiono ◽  
Jia Nee Foo ◽  
...  
Keyword(s):  
Reaction Time ◽  
Receptor Gene ◽  
Critical Role ◽  
Oxytocin Receptor ◽  
Genetic Group ◽  
Environment Interaction ◽  
Indirect Pathway ◽  
Oxytocin Receptor Gene ◽  
Face Categorization ◽  
Gene Environment

AbstractHuman faces are relevant stimuli that capture attention, provide information about group belonging and elicit automatic prepared responses. While early experiences with other race faces plays a critical role in acquiring face expertise, the exact mechanism through which it exerts its influence is still to be elucidated. In particular, the influence of genetic factors and the role of a multi-ethnic context has not been explored. The aim of this study was to investigate how caregiving experiences with nannies and oxytocin receptor gene (OXTR) genotypes interact in regulating other-race categorisation mechanisms in adults. Information about single nucleotide polymorphisms of the OXTR (rs53576) and experiences with own- and other-race nannies was collected from 89 Singaporean adults, who completed a visual categorization task of face stimuli (Chinese or Javanese). Participants were grouped into A/A homozygotes and G-carriers and assigned a score to account for the type of nanny experience. A General Linear Model was used to estimate the effect of nanny experience, genetic group and their interaction on categorization reaction time. A significant main effect of the nanny experience (p<.001) and of the interaction between genetic group and experience (p=.008) was found. Post-hoc analysis revealed a significant negative correlation between nanny experience and reaction time for A/A homozygotes (r=−0.52, p<.001) but no significant correlation for G-carriers. In summary, a significant gene-environment interaction on face categorization was found. This finding appears to represent an indirect pathway through which genes and experiences interact to shape mature social sensitivity in human adults.HighlightsEarly nanny experience interacts with oxytocin receptor genotype in affecting the speed of face categorisation.Individuals with other-race nanny experience show faster categorisation response times. Gene-environment interactions are present in face categorisation.

The Hormonal Underpinnings of Sexual Communication

2020 ◽  
pp. 234-260
Author(s):  
Amanda Denes ◽  
Anuraj Dhillon ◽  
Ambyre L. P. Ponivas ◽  
Kara L. Winkler
Keyword(s):  
Interpersonal Relationships ◽  
Sexual Communication ◽  
Receptor Gene ◽  
Oxytocin Receptor ◽  
Communication Research ◽  
Future Directions ◽  
Oxytocin Receptor Gene ◽  
Broad Domain ◽  
Relational Outcomes

Sexual communication is a pivotal part of interpersonal relationships; recent research reveals associations between sexual communication and various relational outcomes. Within the broad domain of sexual communication, current scholarship specifically addresses the role of postsex communication in relationships and its links to physiological and genetic markers. Given these advancements, the present chapter offers an overview of research linking physiology, hormones, and genes to communication after sexual activity. The chapter first presents reviews of two key hormones in sexual communication research: testosterone (T) and oxytocin (O). The oxytocin receptor gene and its link to social behavior broadly, and sexual behavior specifically, is also explored. The chapter then offers a review of several theories relevant to understanding the hormonal underpinnings of sexual communication, as well as future directions for research exploring sexual communication and physiology.

scholarly journals The relation between Oxytocin Receptor Gene polymorphisms, adult attachment and Instagram sociability: an exploratory analysis

2020 ◽  
Author(s):  
Alessandro Carollo ◽  
Andrea Bonassi ◽  
Ilaria Cataldo ◽  
Giulio Gabrieli ◽  
Moses Tandiono ◽  
...  
Keyword(s):  
Social Behavior ◽  
Adult Attachment ◽  
Behavioral Genetics ◽  
Receptor Gene ◽  
Oxytocin Receptor ◽  
Oxytocin Receptor Gene ◽  
Gene Environment ◽  
Receptor Gene Polymorphisms ◽  
Oxtr Rs53576 ◽  
Desirability Index

So far literature considered the association between environmental factors (i.e. involved in adult relationships) and genetic vulnerability on Oxytocin Receptor Gene (OXTR) in the comprehension of social behavior. Although an extensive knowledge on in-person social interactions has been obtained, little is known about online social behavior. A gene-environment perspective is adopted to examine how OXTR and adult attachment moderate Instagram behavior. The Experience in Close Relationships-Revised (ECR-R) questionnaire was used to collect participants' (N = 57, 16 males) attachment with their partners. The genetic factors within the regions OXTR rs53576 (A/A homozygotes vs. G-carriers) and rs2254298 (G/G homozygotes vs. A-carriers) were assessed. Number of posts, followed people ("followings") and followers were obtained from Instagram, and the Social Desirability Index was calculated as the ratio of followers to followings. Interaction effects between OXTR groups and ECR-R scores on the number of posts and SDI were hypothesised. Results showed an effect of rs53576 on the number of Instagram followings. Specifically, A/A homozygotes had more followings than G-carriers independently of the quality of the relationship with their partner. These preliminary results are discussed in light of the debate of behavioral genetics and offer insights into future investigations on social media behavior.

scholarly journals Role of Rare and Low-Frequency Variants in Gene-Alcohol Interactions on Plasma Lipid Levels

2020 ◽  
Vol 13 (4) ◽  
Author(s):  
Zhe Wang ◽  
Han Chen ◽  
Traci M. Bartz ◽  
Lawrence F. Bielak ◽  
Daniel I. Chasman ◽  
...  
Keyword(s):  
Alcohol Consumption ◽  
Plasma Lipid ◽  
Low Frequency ◽  
Environment Interaction ◽  
Lipid Levels ◽  
Protein Coding ◽  
Gene Environment Interaction ◽  
Gene Environment ◽  
Coding Variants

Background: Alcohol intake influences plasma lipid levels, and such effects may be moderated by genetic variants. We aimed to characterize the role of aggregated rare and low-frequency protein-coding variants in gene by alcohol consumption interactions associated with fasting plasma lipid levels. Methods: In the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium, fasting plasma triglycerides and high- and low-density lipoprotein cholesterol were measured in 34 153 individuals with European ancestry from 5 discovery studies and 32 277 individuals from 6 replication studies. Rare and low-frequency functional protein-coding variants (minor allele frequency, ≤5%) measured by an exome array were aggregated by genes and evaluated by a gene-environment interaction test and a joint test of genetic main and gene-environment interaction effects. Two dichotomous self-reported alcohol consumption variables, current drinker, defined as any recurrent drinking behavior, and regular drinker, defined as the subset of current drinkers who consume at least 2 drinks per week, were considered. Results: We discovered and replicated 21 gene-lipid associations at 13 known lipid loci through the joint test. Eight loci ( PCSK9 , LPA , LPL , LIPG , ANGPTL4 , APOB , APOC3 , and CD300LG ) remained significant after conditioning on the common index single-nucleotide polymorphism identified by previous genome-wide association studies, suggesting an independent role for rare and low-frequency variants at these loci. One significant gene-alcohol interaction on triglycerides in a novel locus was significantly discovered ( P =6.65×10 −6 for the interaction test) and replicated at nominal significance level ( P =0.013) in SMC5 . Conclusions: In conclusion, this study applied new gene-based statistical approaches and suggested that rare and low-frequency genetic variants interacted with alcohol consumption on lipid levels.

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