Genetic and Individual Influences on Predictors of Disclosure: Exploring Variation in the Oxytocin Receptor Gene and Attachment Security

Abstract

The present study explores the associations among allelic variation in the oxytocin receptor gene (OXTR), attachment security, and predictors of disclosure. Using the risk revelation model as a guiding framework, risk assessments, communication efficacy, and closeness were investigated. Two-hundred four participants provided saliva samples (from which DNA was extracted) and completed surveys addressing aspects of disclosure, attachment, and relationship characteristics. The results revealed significant interactions between OXTR and attachment security on risk assessments and closeness. Insecurely attached individuals showed greater variability in their assessments of the risks of disclosing and feelings of closeness based on their genotype compared to individuals who were securely attached. Insecurely attached individuals with a known “risk allele” (i.e., the A allele) were more likely to see risks to disclosing to their romantic partners and rated closeness with their partners lower than those with the alternative genotype (i.e., the GG genotype). These findings and their implications for theories of disclosure are discussed.

Keywords:

• Oxytocin Receptor Gene
• Disclosure
• Attachment
• Gene–Environment Interaction
• Risk Revelation Model

Acknowledgments

The author wishes to thank the editors and reviewers for their invaluable feedback and assistance.