Related Experiment Video
Updated: Feb 23, 2026
05:12
Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
Published on: June 23, 2023
1.7K
The Causal Role of Alcohol Use in Adolescent Externalizing and Internalizing Problems: A Mendelian Randomization
Miao Chao1,2, Xinying Li1,2, Matt McGue3
1CAS Key Laboratory of Mental Health, Institute of Psychology, Chaoyang District, China.
Alcoholism, Clinical and Experimental Research
|September 7, 2017
Summary
This study suggests alcohol use causes aggression and attention problems in adolescents. However, it does not appear to cause delinquency, anxiety, or depression in this population.
Area of Science:
- Adolescent mental health
- Behavioral genetics
- Substance use research
Background:
- Co-occurrence of alcohol use and mental health problems (externalizing/internalizing) is a concern for adolescents.
- Understanding causal relationships between alcohol use and these problems is crucial for intervention.
Purpose of the Study:
- To investigate the causal relationship between alcohol use and externalizing/internalizing problems in adolescents.
- To determine if alcohol use causes aggression, delinquency, attention problems, depression, or anxiety.
Main Methods:
- Mendelian randomization analysis using the ALDH2 rs671 polymorphism as an instrumental variable for alcohol use.
- Genotyping of 1,608 Chinese adolescents for the ALDH2 rs671 polymorphism.
- Assessment of aggression, delinquency, attention problems, depression, and anxiety using validated self-report inventories.
Main Results:
- Alcohol use was positively associated with all measured externalizing and internalizing problems.
- The ALDH2 polymorphism significantly influenced alcohol use, aggression, and attention problems.
- No significant association was found between the ALDH2 polymorphism and delinquency, anxiety, or depression.
Conclusions:
- Alcohol consumption is identified as a causal factor for adolescent aggression and attention problems.
- The study found no evidence that alcohol use causally leads to adolescent delinquency, anxiety, or depression.
Related Concept Videos
01:28Human Genetics
1.7K
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
1.7K
02:05Self-Presentation: Self-Monitoring and Self-Handicapping
44.8K
People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about...
44.8K
01:27CNS Depressants: Alcohol and Nicotine
1.4K
Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
1.4K
01:23Behavioral Genetics and Its Designs
1.2K
Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
1.2K
01:26Stress Prevention and Stress Management Techniques IV
283
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
283
01:24Substance Use Disorders Affecting Sleep
468
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.
Understanding the concepts of physical dependence,...
Understanding the concepts of physical dependence,...
468