Chinese, Mandarin

Spanish

English

Hindi

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Portuguese

Bengali

Russian

Japanese

Punjabi

German

Javanese

Malay

Telugu

Vietnamese

Korean

French

Marathi

Tamil

Urdu

Turkish

Italian

Chinese, Yue / Cantonese

Thai

Gujarati

Chinese, Jin

Chinese, Min Nan

Persian, Dari

Persian, Western

Polish

Pashto

Kannada

Chinese, Xiang

Malayalam

Sundanese

Hausa

Odia

Burmese

Chinese, Hakka

Ukrainian

Bihari, Bhojpuri

Tagalog

Yoruba

Bihari, Maithili

Uzbek

Sindhi

Amharic

Fula

Romanian

Oromo

Igbo

Azerbaijani

Chinese, Gan

Dutch

Kurdish, Central

Kurdish, Northern

Kurdish, Southern

Malagasy

Lahnda, Saraiki

Nepali

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Chittagonian

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Turkmen

Assamese

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Somali

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Hungarian

Chhattisgarhi

Greek, Modern

Chewa

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Akan, Fante

Kazakh

Chinese, Min Bei

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Zulu

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Marwari, Dhundhari

Haitian Creole

Chinese, Min Dong

Ilocano

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Kirundi

Swedish

Hmong

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Xhosa

Belarusian

Balochi

Sociology

<OpenstaxParagraph>
	Sociologists have long looked at population issues as central to understanding human interactions. Below we will look at four theories about population that inform sociological thought: Malthusian, zero population growth, cornucopian, and demographic transition theories.
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<OpenstaxH3>Malthusian Theory</OpenstaxH3>
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	Thomas Malthus (1766–1834) was an English clergyman who made dire predictions about earth’s ability to sustain its growing population. According to <OpenstaxTerm>Malthusian theory</OpenstaxTerm>, three factors would control human population that exceeded the earth’s <OpenstaxTerm>carrying capacity</OpenstaxTerm>, or how many people can live in a given area considering the amount of available resources. Malthus identified these factors as war, famine, and disease (Malthus 1798). He termed them “positive checks” because they increase mortality rates, thus keeping the population in check. They are countered by “preventive checks,” which also control the population but by reducing fertility rates; preventive checks include birth control and celibacy. Thinking practically, Malthus saw that people could produce only so much food in a given year, yet the population was increasing at an exponential rate. Eventually, he thought people would run out of food and begin to starve. They would go to war over increasingly scarce resources and reduce the population to a manageable level, and then the cycle would begin anew.
</OpenstaxParagraph>
<OpenstaxParagraph>
	Of course, this has not exactly happened. The human population has continued to grow long past Malthus’s predictions. So what happened? Why didn’t we die off? There are three reasons sociologists believe we are continuing to expand the population of our planet. First, technological increases in food production have increased both the amount and quality of calories we can produce per person. Second, human ingenuity has developed new medicine to curtail death from disease. Finally, the development and widespread use of contraception and other forms of family planning have decreased the speed at which our population increases. But what about the future? Some still believe Malthus was correct and that ample resources to support the earth’s population will soon run out.
</OpenstaxParagraph>
<OpenstaxH3>Zero Population Growth</OpenstaxH3>
<OpenstaxParagraph>
	A neo-Malthusian researcher named Paul Ehrlich brought Malthus’s predictions into the twentieth century. However, according to Ehrlich, it is the environment, not specifically the food supply, that will play a crucial role in the continued health of the planet’s population (Ehrlich 1968). Ehrlich's ideas suggest that the human population is moving rapidly toward complete environmental collapse, as privileged people use up or pollute a number of environmental resources such as water and air. He advocated for a goal of <OpenstaxTerm>zero population growth</OpenstaxTerm> (ZPG), in which the number of people entering a population through birth or immigration is equal to the number of people leaving it via death or emigration. While support for this concept is mixed, it is still considered a possible solution to global overpopulation. 
</OpenstaxParagraph>
<OpenstaxH3>Cornucopian Theory</OpenstaxH3>
<OpenstaxParagraph>
	Of course, some theories are less focused on the pessimistic hypothesis that the world’s population will meet a detrimental challenge to sustaining itself. <OpenstaxTerm>Cornucopian theory</OpenstaxTerm> scoffs at the idea of humans wiping themselves out; it asserts that human ingenuity can resolve any environmental or social issues that develop. As an example, it points to the issue of food supply. If we need more food, the theory contends, agricultural scientists will figure out how to grow it, as they have already been doing for centuries. After all, in this perspective, human ingenuity has been up to the task for thousands of years and there is no reason for that pattern not to continue (Simon 1981).
</OpenstaxParagraph>
<OpenstaxH3>Demographic Transition Theory</OpenstaxH3>
<OpenstaxParagraph>
	Whether you believe that we are headed for environmental disaster and the end of human existence as we know it, or you think people will always adapt to changing circumstances, we can see clear patterns in population growth. Societies develop along a predictable continuum as they evolve from unindustrialized to postindustrial. <OpenstaxTerm>Demographic transition theory</OpenstaxTerm> (Caldwell and Caldwell 2006) suggests that future population growth will develop along a predictable four-stage model.
</OpenstaxParagraph>
<OpenstaxParagraph>
	In Stage 1, birth, death, and infant mortality rates are all high, while life expectancy is short. An example of this stage is the 1800s in the United States. As countries begin to industrialize, they enter Stage 2, where birth rates are higher while infant mortality and the death rates drop. Life expectancy also increases. Afghanistan is currently in this stage. Stage 3 occurs once a society is thoroughly industrialized; birth rates decline, while life expectancy continues to increase. Death rates continue to decrease. Mexico’s population is at this stage. In the final phase, Stage 4, we see the postindustrial era of a society. Birth and death rates are low, people are healthier and live longer, and society enters a phase of population stability. Overall population may even decline. For example, Sweden is considered to be in Stage 4.
</OpenstaxParagraph>
<OpenstaxParagraph>
	The United Nations Population Fund (2008) categorizes nations as high fertility, intermediate fertility, or low fertility. The United Nations (UN) anticipates the population growth will triple between 2011 and 2100 in high-fertility countries, which are currently concentrated in sub-Saharan Africa. For countries with intermediate fertility rates (the United States, India, and Mexico all fall into this category), growth is expected to be about 26 percent. And low-fertility countries like China, Australia, and most of Europe will actually see population declines of approximately 20 percent. The graphs below illustrate this trend.
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20.1.2 Demographic Theories

1 An Introduction to Sociology

1.1 What Is Sociology?

1.1.1 What Are Society and Culture?

1.1.2 Studying Patterns: How Sociologists View Society

1.1.3 Studying Part and Whole: How Sociologists View Social Structures

1.2 The History of Sociology

1.2.1 Creating a Discipline: European Theorists

1.2.2 Applying the Discipline: American Theorists and Practitioners

1.3 Theoretical Perspectives in Sociology

1.3.1 Functionalism

1.3.2 Conflict Theory

1.3.3 Symbolic Interactionist Theory

1.3.4 Sociological Theory Today

1.4 Why Study Sociology?

1.4.1 Sociology and a Better Society

1.4.2 Sociology in the Workplace

2 Sociological Research

2.1 Approaches to Sociological Research

2.1.1 The Scientific Method

2.1.2 Interpretive Framework

2.1.3 Critical Sociology

2.2 Research Methods

2.2.1 Surveys

2.2.2 Field Research

2.2.3 Experiments

2.2.4 Secondary Data Analysis

2.3 Ethical Concerns

3 Culture

3.1 What Is Culture?

3.1.1 Cultural Universals

3.1.2 Ethnocentrism and Cultural Relativism

3.2 Elements of Culture

3.2.1 Values and Beliefs

3.2.2 Norms

3.2.3 Symbols and Culture

3.2.4 Language and Symbols

3.2.5 Language and Culture

3.3 High, Low, Pop, Sub, Counter-culture and Cultural Change

3.3.1 High, Low, and Popular Culture

3.3.2 Subculture and Counterculture

3.3.3 Cultural Change

3.4 Theoretical Perspectives on Culture

4 Society and Social Interaction

4.1 Types of Societies

4.1.1 Preindustrial Societies

4.1.2 Industrial Society

4.1.3 Postindustrial Society

4.2 Theoretical Perspectives on Society

4.2.1 Émile Durkheim and Functionalism

4.2.2 Karl Marx and Conflict Theory

4.2.3 Max Weber and Symbolic Interactionism

4.3 Social Constructions of Reality

4.3.1 Roles and Status

4.3.2 Presentation of Self

5 Socialization

5.1 Theories of Self-Development

5.1.1 Psychological Perspectives on Self-Development

5.1.2 Sociological Theories of Self-Development

5.2 Why Socialization Matters

5.2.1 Nature versus Nurture

5.3 Agents of Socialization

5.3.1 Social Group Agents

5.3.2 Institutional Agents

5.4 Socialization Across the Life Course

5.4.1 Resocialization

6 Groups and Organization

6.1 Types of Groups

6.1.1 Defining a Group

6.1.2 Types of Groups

6.1.3 In-Groups and Out-Groups

6.1.4 Reference Groups

6.2 Group Size and Structure

6.2.1 Dyads, Triads, and Large Groups

6.2.2 Group Leadership

6.2.3 Conformity

6.2.4 The Bystander Effect and Diffusion of Responsibility

6.3 Formal Organizations

6.3.1 Types of Formal Organizations

6.3.2 The McDonaldization of Society

7 Deviance, Crime, and Social Control

7.1 Deviance and Control

7.1.1 Deviance, Crime, and Society

7.1.2 Social Control

7.2 Theoretical Perspectives on Deviance and Crime

7.2.1 Functionalism

7.2.2 Conflict Theory

7.2.3 Symbolic Interactionism

7.3 Crime and the Law

7.3.1 Types of Crimes

7.3.2 Crime Statistics

7.3.3 Public Perception of Crime

7.3.4 The U.S. Criminal Justice System

8 Media and Technology

8.1 Technology Today

8.1.1 What Is Technology?

8.2 Media and Technology in Society

8.2.1 Categorizing Technology

8.2.2 Types of Media and Technology

8.2.3 Product Advertising and the Attention Economy

Question	Answer
the amount of people that can live in a given area considering the amount of available resources	carrying capacity
a theory that asserts human ingenuity will rise to the challenge of providing adequate resources for a growing population	cornucopian theory
a theory that describes four stages of population growth, following patterns that connect birth and death rates with stages of industrial development	demographic transition theory
a theory asserting that population is controlled through positive checks (war, famine, disease) and preventive checks (measures to reduce fertility)	Malthusian theory
a theoretical goal in which the number of people entering a population through birth or immigration is equal to the number of people leaving it via death or emigration	zero population growth