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Related Concept Videos

Attachment Styles01:24

Attachment Styles

Jeffrey Simpson's attachment theory suggests that early caregiver relationships shape lasting patterns of behavior and emotional regulation, known as attachment styles. These patterns are organized along two key dimensions: self-esteem and interpersonal trust. The intersection of these dimensions produces four primary attachment styles that typically persist throughout life and significantly influence how individuals form and maintain relationships.Secure Attachment StyleIndividuals with a...
Relationship with Parents: Attachment01:28

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Parent-child interactions lay the foundation for how we understand relationships throughout life. These interactions are not uniform across families; instead, they are shaped by a range of environmental, emotional, and behavioral factors unique to each caregiver-child dynamic. Social psychologists study these early relationships to understand how patterns formed in infancy influence social functioning and interpersonal behavior in adulthood.Attachment Theory and Early Relational ModelsJohn...
Gene-Environment Interactions01:20

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Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
Substance Use Disorders Affecting Sleep01:24

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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Theory of Romantic Attachment in Adulthood03:34

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Attachment is a long-standing connection or bond with others. While Attachment Theory was conceived in developmental psychology to describe infant-caregiver bonding, it's been extended into adulthood to include romantic relationships.
Hazan and Shaver's Attachment Styles01:28

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Attachment theory, developed initially to explain infant–caregiver bonds, has been extended to illuminate patterns of intimacy in adult romantic relationships. Psychologists Cindy Hazan and Phillip Shaver proposed that the attachment styles observed in infancy form a framework for how individuals approach emotional closeness and conflict in adulthood. These attachment styles—secure, avoidant, and anxious—are linked to enduring patterns of behavior and emotional regulation in adult relationships.

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Related Experiment Video

Updated: May 27, 2026

Wheel Running and Environmental Complexity as a Therapeutic Intervention in an Animal Model of FASD
06:09

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Published on: February 2, 2017

Gene-environment interaction in problematic substance use: interaction between DRD4 and insecure attachments.

Craig A Olsson1, Robert K Moyzis, Elizabeth Williamson

  • 1Department of Psychology, Deakin University, Australia Murdoch Children's Research Institute, Royal Children's Hospital, Australia. craig.olsson@rch.org.au

Addiction Biology
|December 1, 2011
PubMed
Summary
This summary is machine-generated.

Genetic variations in the dopamine receptor gene (DRD4) and insecure attachment styles increase risks for tobacco and cannabis use problems in young adults. This combined effect intensifies the likelihood of developing substance use disorders.

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Investigating Drivers of Antireward in Addiction Behavior with Anatomically Specific Single-Cell Gene Expression Methods
09:29

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Published on: August 4, 2022

Area of Science:

  • Neuroscience
  • Genetics
  • Psychology
  • Addiction Research

Background:

  • The dopamine receptor gene (DRD4) exon III variable number tandem repeat (VNTR) has been implicated in various behavioral outcomes.
  • Insecure attachment styles are associated with increased vulnerability to psychopathology and substance use.
  • Understanding gene-environment interactions is crucial for predicting substance use disorder (SUD) risk.

Purpose of the Study:

  • To examine the combined impact of DRD4 VNTR polymorphisms (specifically the 7R+ allele) and insecure attachment on the risk of tobacco, cannabis, and alcohol use problems in young adults.
  • To test the hypothesis that individuals with the 7R+ DRD4 genotype and insecure attachment exhibit heightened risk for problematic substance use.
  • To explore potential interactions between genetic predisposition and early life experiences in the development of SUDs.

Main Methods:

  • Utilized data from the Victorian Adolescent Health Cohort Study, a longitudinal investigation of adolescent and young adult development.
  • Genotyped 839 participants for DRD4 exon III VNTR polymorphisms.
  • Employed a sufficient causes framework with additive interaction assumptions to analyze the combined effects of the 7R+ genotype and insecure attachment styles (anxious and avoidant) on substance use problems.

Main Results:

  • The 7R+ DRD4 allele was associated with increased use of tobacco, cannabis, and binge alcohol consumption.
  • Insecure attachment correlated with higher tobacco and cannabis use, but lower alcohol use.
  • Significant interactions were observed between the 7R+ genotype and insecure attachment for tobacco (anxious attachment) and cannabis (both anxious and avoidant attachments), indicating intensified risk.
  • No significant interaction was found for binge alcohol use.

Conclusions:

  • The findings support a generic reward deficit hypothesis of addiction, suggesting the 7R+ DRD4 genotype may confer a predisposition.
  • Interaction between 7R+ alleles and attachment insecurity significantly elevates the risk for problematic tobacco and cannabis use.
  • These results highlight the importance of considering gene-environment interplay in understanding and addressing substance use disorders.