Socio Ecological Model

The Socio Ecological Model (SEM) is a comprehensive framework used to understand the complex relationships between individuals and their environment. Developed by Urie Bronfenbrenner, the model posits that human behavior is influenced by multiple levels of factors, ranging from personal characteristics to broader societal and environmental factors. The SEM has been widely applied in various fields, including public health, psychology, and education, to design interventions and programs that promote positive behavioral change.
Overview of the Socio Ecological Model

The Socio Ecological Model consists of five nested levels: individual, interpersonal, community, organizational, and policy. Each level interacts with and influences the others, creating a dynamic system that shapes human behavior. The individual level focuses on personal characteristics, such as knowledge, attitudes, and skills, that influence behavior. The interpersonal level examines the relationships between individuals and their social networks, including social support and social norms. The community level considers the broader social and environmental context, including community resources and physical environment. The organizational level looks at the policies and procedures within institutions, such as schools and workplaces, that affect behavior. Finally, the policy level examines the laws and regulations that govern behavior at the national and international levels.
Individual Level
The individual level is the most basic unit of analysis in the Socio Ecological Model. At this level, factors such as demographic characteristics, personality traits, and behavioral intentions influence behavior. For example, an individual’s self-efficacy and motivation can affect their ability to engage in physical activity or adopt healthy eating habits. Understanding the individual level factors is crucial for designing interventions that promote positive behavioral change.
Individual Level Factors | Example |
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Demographic characteristics | Age, gender, income |
Personality traits | Self-efficacy, motivation |
Behavioral intentions | Intent to exercise, intent to quit smoking |

Interpersonal Level
The interpersonal level examines the relationships between individuals and their social networks. Factors such as social support, social norms, and communication patterns influence behavior at this level. For example, an individual’s social support network can provide encouragement and motivation to engage in physical activity or quit smoking. Understanding the interpersonal level factors is essential for designing interventions that leverage social influences to promote positive behavioral change.
- Social support: provision of emotional, informational, or practical assistance
- Social norms: unwritten rules that govern behavior in a social group
- Communication patterns: ways in which individuals interact with each other
Community Level
The community level considers the broader social and environmental context in which individuals live and interact. Factors such as community resources, physical environment, and community norms influence behavior at this level. For example, the availability of community parks and recreational facilities can promote physical activity, while the presence of fast food restaurants can discourage healthy eating habits. Understanding the community level factors is crucial for designing interventions that address the social and environmental determinants of health.
Community Level Factors | Example |
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Community resources | Parks, recreational facilities, community centers |
Physical environment | Urban design, transportation infrastructure, housing quality |
Community norms | Norms around physical activity, healthy eating, substance use |
Organizational Level
The organizational level examines the policies and procedures within institutions, such as schools and workplaces, that affect behavior. Factors such as workplace policies, school curricula, and organizational culture influence behavior at this level. For example, a workplace wellness program can promote physical activity and healthy eating habits among employees, while a school curriculum that emphasizes health education can promote healthy behaviors among students. Understanding the organizational level factors is essential for designing interventions that address the institutional determinants of health.
- Workplace policies: policies that govern employee behavior, such as smoke-free policies
- School curricula: educational programs that promote healthy behaviors, such as physical education
- Organizational culture: the values, norms, and beliefs that govern behavior within an organization
Policy Level
The policy level examines the laws and regulations that govern behavior at the national and international levels. Factors such as taxation policies, subsidies, and trade agreements influence behavior at this level. For example, a tax on sugary drinks can discourage consumption of unhealthy beverages, while a subsidy for farmers’ markets can promote access to healthy foods. Understanding the policy level factors is crucial for designing interventions that address the macro-level determinants of health.
Policy Level Factors | Example |
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Taxation policies | Tax on sugary drinks, tax on tobacco products |
Subsidies | Subsidy for farmers' markets, subsidy for physical activity programs |
Trade agreements | Agreements that govern the importation and exportation of food products |
What is the Socio Ecological Model?
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The Socio Ecological Model is a comprehensive framework that recognizes the complex relationships between individuals and their environment. It consists of five nested levels: individual, interpersonal, community, organizational, and policy.
How does the Socio Ecological Model apply to public health?
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The Socio Ecological Model is widely applied in public health to design interventions and programs that promote positive behavioral change. It recognizes that health behavior is influenced by multiple levels of factors, ranging from personal characteristics to broader societal and environmental factors.
What are some examples of individual level factors in the Socio Ecological Model?
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Examples of individual level factors in the Socio Ecological Model include demographic characteristics, personality traits, and behavioral intentions. These factors can influence behavior, such as the decision to engage in physical activity or adopt healthy eating habits.