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Unilineal evolution (also referred to as classical social evolution(ism)) is a 19th century social theory about the evolution of societies and cultures. It was composed of many competing theories by various sociologists and anthropologists, who believed that Western culture is the contemporary pinnacle of social evolution. This theory is now considered obsolete.

The Historical Context of Unilineal Classical Social Evolutionism Edit

Intellectual Thought Edit

Theories of social and cultural evolution are common in modern European thought. Prior to the 18th century, Europeans predominantly believed that societies on Earth were in a state of decline. European society held up the world of antiquity as a standard to aspire to, and Ancient Greece and Ancient Rome produced levels of technical accomplishment which Europeans of the Middle Ages sought to emulate. At the same time, Christianity taught that people lived in a debased world fundamentally inferior to the Garden of Eden and Heaven. During the Age of Enlightenment, however, European self-confidence grew and the notion of progress became increasingly popular. It was during this period that what would later become known as 'sociological and cultural evolution' would have its roots.

The Enlightenment thinkers often speculated that societies progressed through stages of increasing development and looked for the logic, order and the set of scientific truths that determined the course of human history. Hegel, for example, argued that social development was an inevitable and determined process, similar to an acorn which has no choice but to become an oak tree. Likewise, it was assumed that societies start out primitive, perhaps in a Hobbesian state of nature, and naturally progress toward something resembling industrial Europe.

Scottish Thinkers Edit

While earlier authors such as Michel de Montaigne discussed how societies change through time, it was truly the Scottish Enlightenment which proved key in the development of cultural evolution. After union with England in 1707, several Scottish thinkers pondered what the relationship between progress and the 'decadence' brought about by increased trade with England and the affluence it produced. The result was a series of 'conjectural history|conjectural histories.' Authors such as Adam Ferguson, John Millar, and Adam Smith argued that all societies pass through a series of four stages: hunting and gathering, pastoralism and nomadism, agricultural, and finally a stage of commerce. These thinkers thus understood the changes Scotland was undergoing as a transition from an agricultural to a mercantile society.

Philosophical concepts of progress (such as those expounded by the German philosopher G.W.F. Hegel) developed as well during this period. In France authors such as Claude Adrien Helvétius and other philosophers were influenced by this Scottish tradition. Later thinkers such as Claude Henri de Rouvroy developed these ideas. August Comte in particular presented a coherent view of social progress and a new discipline to study it -- sociology.

Rising Interests Edit

These developments took place in a wider context. The first process was colonialism. Although Imperial powers settled most differences of opinion with their colonial subjects with force, increased awareness of non-Western peoples raised new questions for European scholars about the nature of society and culture. Similarly, effective administration required some degree of understanding of other cultures. Emerging theories of social evolution allowed Europeans to organize their new knowledge in a way that reflected and justified their increasing political and economic domination of others: colonized people were less-evolved, colonizing people were more evolved. The second process was the Industrial Revolution and the rise of capitalism which allowed and promoted continual revolutions in the means of production. Emerging theories of social evolution reflected a belief that the changes in Europe wrought by the Industrial Revolution and capitalism were obvious improvements. Industrialization, combined with the intense political change brought about by the French Revolution, US Constitution and Polish Constitution of the 3rd May, which were paving the way for the history of democracy, forced European thinkers to reconsider some of their assumptions about how society was organized.

Eventually, in the 19th century three great, classical theories of social and historical change were created: the social evolutionism theory, the social cycle theory and the Marxist historical materialism theory. Those theories had one common factor: they all agreed that the history of humanity is pursuing a certain fixed path, most likely that of the social progress. Thus, each past event is not only chronologically, but causally tied to the present and future events. Those theory postulated that by recreating the sequence of those events, sociology could discover the Laws of history.

Birth and Development of Unilineal Classical Social Evolutionism Edit

While social evolutionists agree that the evolution-like process leads to the social progress, classical social evolutionists have developed many different theories, known as theories of unilineal evolution. Social evolutionism was the prevailing theory of early socio-cultural anthropology and social commentary, and is associated with scholars like August Comte, Edward Burnett Tylor, Lewis Henry Morgan, and Herbert Spencer. Social evolutionism represented an attempt to formalize social thinking along scientific lines, later influenced by the biological theory of evolution. If organisms could develop over time according to discernible, deterministic laws, then it seemed reasonable that societies could as well. This really marks the beginning of Anthropology as a scientific discipline and a departure from traditional religious views of "primitive" cultures.

The term "Classical Social Evolutionism" is most closely associated with the 19th century writings of Auguste Comte, Herbert Spencer (who coined the phrase "survival of the fittest") and William Graham Sumner. In many ways Spencer's theory of 'cosmic evolution' has much more in common with the works of Jean-Baptiste Lamarck and August Comte than with contemporary works of Charles Darwin. Spencer also developed and published his theories several years earlier than Darwin. In regard to social institutions, however, there is a good case that Spencer's writings might be classified as 'Social Evolutionism'. Although he wrote that societies over time progressed, and that progress was accomplished through competition, he stressed that the individual (rather than the collectivity) is the unit of analysis that evolves, that evolution takes place through natural selection and that it affects social as well as biological phenomenon.

Progressivism Edit

Both Spencer and Comte view the society as a kind of organism subject to the process of growth - from simplicity to complexity, from chaos to order, from generalisation to specialisation, from flexibility to organisation. They agreed that the process of societies growth can be divided into certain stages, have their beginning and eventual end, and that this growth is in fact social progress - each newer, more evolved society is better. Thus progressivism became one of the basic ideas underlying the theory of social evolutionism.

Comte Edit

August Comte, known as father of sociology, formulated the law of three stages: human development progresses from the theological stage, in which nature was mythically conceived and man sought the explanation of natural phenomena from supernatural beings, through metaphysical stage in which nature was conceived of as a result of obscure forces and man sought the explanation of natural phenomena from them until the final positive stage in which all abstract and obscure forces are discarded, and natural phenomena are explained by their constant relationship. This progress is forced through the development of human mind, and increasing application of thought, reasoning and logic to the understanding of world.


Spencer Edit

Herbert Spencer, who believed that society was evolving toward increasing freedom for individuals; and so held that government intervention, ought to be minimal in social and political life, differentiated between two phases of development, focusing is on the type of internal regulation within societies. Thus he differentiated between military and industrial societies. The earlier, more primitive military society has a goal of conquest and defence, is centralised, economically self-sufficient, collectivistic, puts the good of a group over the good of an individual, uses compulsion, force and repression, rewards loyalty, obedience and discipline. The industrial society has a goal of production and trade, is decentralised, interconnected with other societies via economic relations, achieves its goals through voluntary cooperation and individual self-restrain, treats the good of individual as the highest value, regulates the social life via voluntary relations, values initiative, independence and innovation.


Regardless of how scholars of Spencer interpret his relation to Darwin, Spencer proved to be an incredibly popular figure in the 1870s, particularly in the United States. Authors such as Edward Youmans, William Graham Sumner, John Fiske, John W. Burgess, Lester Frank Ward, Lewis H. Morgan and other thinkers of the gilded age all developed theories of social evolutionism as a result of their exposure to Spencer as well as Darwin.

Morgan Edit

Lewis H. Morgan, an anthropologist whose ideas have had much impact on sociology, in his 1877 classic "Ancient Societies" differentiated between three eras: savagery, barbarism and civilisation, which are divided by technological inventions, like fire, bow, pottery in savage era, domestication of animals, agriculture, metalworking in barbarian era and alphabet and writing in civilisation era. Thus Morgan introduced a link between the social progress and technological progress. Morgan viewed the technological progress as a force behinds the social progress, and any social change - in social institutions, organisations or ideologies have their beginning in the change of technology.

Morgan's theories were popularised by Friedrich Engels, who based his famous work "The Origin of the Family, Private Property and the State" on it. For Engels and other marxists, this theory was important as it supported their conviction that materialistic factors - economical and technological - are decisive in shaping the fate of humanity.

Durkheim Edit

Emile Durkheim, another of the 'fathers' of sociology, has developed a similar, dichotomical view of social progress. His key concept was social solidarity, as he defined the social evolution in terms of progressing from mechanical solidarity to organic solidarity. In mechanical solidarity, people are self-sufficient, there is little integration and thus there is the need for use of force and repression to keep society together. In organic solidarity, people are much more integrated and interdependent and specialisation and cooperation is extensive. Progress from mechanical to organic solidarity is based first on population growth and increasing population density, second on increasing 'morality density' (development of more complex social interactions) and thirdly, on the increasing specialisation in workplace. To Durkheim, the most important factor in the social progress is the division of labor.

Tylor & Morgan Edit

Anthropologists Sir E.B. Tylor in England and Lewis Henry Morgan in the United States worked with data from indigenous people, whom they claimed represented earlier stages of cultural evolution that gave insight into the process and progression of cultural evolution Morgan would later have a significant influence on Karl Marx and Friedrich Engels, who developed a theory of cultural evolution in which the internal contradictions in society created a series of escalating stages that ended in a socialist society (see Marxism). Tylor and Morgan elaborated the theory of unilinear evolution, specifying criteria for categorizing cultures according to their standing within a fixed system of growth of humanity as a whole and examining the modes and mechanisms of this growth.

Their analysis of cross-cultural data was based on three assumptions:

  1. contemporary societies may be classified and ranked as more "primitive" or more "civilized;"
  2. There are a determinate number of stages between "primitive" and "civilized" (e.g. band, tribe, chiefdom, and state),
  3. All societies progress through these stages in the same sequence, but at different rates.

Theorists usually measured progression (that is, the difference between one stage and the next) in terms of increasing social complexity (including class differentiation and a complex division of labor), or an increase in intellectual, theological, and aesthetic sophistication. These 19th century ethnologists used these principles primarily to explain differences in religious beliefs and kinship terminologies among various societies.

Ward Edit

There were however notable differences between the work of Lester Frank Ward's and Tylor's approaches. Lester Frank Ward developed Spencer's theory but unlike Spencer, who considered the evolution to be general process applicable to the entire world, physical and sociological, Ward differentiated sociological evolution from biological evolution. He stressed that humans create goals for themselves and strive to realise them, whereas there is no such intelligence and awareness guiding the non-human world, which develops more or less at random. He created a hierarchy of evolution processes. First, there is cosmogenesis, creation and evolution of the world. Then, after life develops, there is biogenesis. Development of humanity leads to anthropogenesis, which is influenced by the human mind. Finally, when society develops, so does sociogenesis, which is the science of shaping the society to fit with various political, cultural and ideological goals.

Edward Burnett Tylor, pioneer of anthropology, focused on the evolution of culture world-wide, noting that culture is an important part of every society and that it is also subject to the process of evolution. He believed that societies were at different stages of cultural development and that the purpose of anthropology was to reconstruct the evolution of culture, from primitive beginnings to the modern state.

Tönnies Edit

Ferdinand Tönnies describes the evolution as the development from informal society, where people have many liberties and there are few laws and obligations, to modern, formal rational society, dominated by traditions and laws and are restricted from acting as they wish. He also notes that there is a tendency of standardization and unification, when all smaller societies are absorbed into the single, large, modern society. Thus Torbes can be said to describe part of the process known today as the globalisation. Torbes was also one of the first sociologists to claim that the evolution of society is not necessarily going in the right direction, that the social progress is not perfect, it can even be called a regress as the newer, more evolved societies are obtained only after paying a high costs, resulting in decreasing satisfaction of individuals making up that society. Tönnies' work became the foundation of neo-evolutionism.

The Critique of Unilineal Clasical Social Evolution and its Impact Edit

Boas Edit

The early 20th century inaugurated a period of systematic critical examination, and rejection of unilineal theories of cultural evolution. Cultural anthropologists such as Franz Boas, typically regarded as the leader of anthropology's rejection of classical social evolutionism, used sophisticated ethnography and more rigorous empirical methods to argue that Spencer, Tylor, and Morgan's theories were speculative and systematically misrepresented ethnographic data. Additionally, they rejected the distinction between "primitive" and "civilized" (or "modern"), pointing out that so-called primitive contemporary societies have just as much history, and were just as evolved, as so-called civilized societies. They therefore argued that that any attempt to use this theory to reconstruct the histories of non-literate (i.e. leaving no historical documents) peoples is entirely speculative and unscientific. They observed that the postulated progression, which typically ended with a stage of civilization identical to that of modern Europe, is ethnocentric. They also pointed out that the theory assumes that societies are clearly bounded and distinct, when in fact cultural traits and forms often cross social boundaries and diffuse among many different societies (and is thus an important mechanism of change). Boas introduced the culture history approach, which concentrated on fieldwork among native peoples to identify actual cultural and historical processes rather than speculative stages of growth

Global Change Edit

Later critics observed that this assumption of firmly bounded societies was proposed precisely at the time when European powers were colonizing non-Western societies, and was thus self-serving. Many anthropologists and social theorists now consider unilineal cultural and social evolution a Western myth seldom based on solid empirical grounds. Critical theorists argue that notions of social evolution are simply justifications for power by the elites of society. Finally, the devastating World Wars that occurred between 1914 and 1945 crippled Europe's self-confidence. After millions of deaths, genocide, and the destruction of Europe's industrial infrastructure, the idea of progress seemed dubious at best.

Major Objections & Concerns Edit

Thus modern socio-cultural evolutionism rejects most of classical social evolutionism due to various theoretical problems:

  1. The theory was deeply ethnocentric--it makes heavy value judgements on different societies; with Western civilization seen as the most valuable.
  2. It assumed all cultures follow the same path or progression and have the same goals.
  3. It equated civilization with material culture (technology, cities, etc.)
  4. It equated evolution with progress or fitness, based on deep misunderstandings of evolutionary theory.
  5. It is greatly contradicted by evidence. Many (but not all) supposedly primitive societies are arguably more peaceful and equitable / democratic than many modern societies, and tend to be more healthy with regard to diet and ecology.

Because social evolution was posited as a scientific theory, it was often used to support unjust and often racist social practices--particularly colonialism, slavery, and the unequal economic conditions present within industrialized Europe. Social darwinism is especially criticised, as it led to some philosophies used by the Nazis.de:Evolutionismus fr:Évolutionnisme (anthropologie) sk:Evolucionizmus

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