Theories Evolutionary Theories Proponent (Background) Major Assumptions/Hypothesis Merits/Demerits Charles Robert Darwin (1809-82) was born at Shrewsbury. He is the first of the evolutionary biologists, the originator of the concept of natural selection. Auguste Comte(19 January 1798 – 5 September 1857) was a French philosopher, a founder of the discipline of sociology and of the doctrine of positivism. He may be regarded as the first philosopher of science in the modern sense of the term Variations exist among the members of any given species of plants and animals and that every species tend to produce more offspring than the environment can support. There is struggle and the individual that are better able to cope with their environment will survive (survival of the fittest). Thus, species change over time. The survivors in the struggle for existence pass on their superior genes to their offspring. Herbert Spencer(born April 27, 1820, Derby, Derbyshire, Eng. — died Dec. 8, 1903, Spencer believed of evolution as a process of growth, comparing all societies to organisms. He contended that change has persistently moved society from homogeneous and simple units toward progressively heterogeneous and interdependent units. Evolutionary perspective compares societies to organism: those exhibiting the same characteristics are grouped together into a class. Societies with the same level of development belong to a particular class and therefore expected to exhibit similar characteristics. Although evolutionary theory fell into disrepute for some 50 years, it has recently undergone a revival (Valder Zanden, 1990). Contemporary approaches take a “multilinear” view of evolution. Proponents of this view recognize Comte believed in unilinear evolution, the assumption that there is a single set of stages through which every person, every society, and every branch of knowledge must develop. Relevant Application to Rural Development From the unilinear development point of view, developing countries like the Philippines is assumed to follow and undergo the same paths which the developed countries now have undergone before reaching their present status. “The theories herein discussed serve as guide in determining what possible changes to expect to be able to increase the chances of survival or it Lewis Henry Morgan- was born on Nov. 21, 1818, William Graham Summer- was born on Oct. 30, 1840, in Paterson, N. J. His parents were both of English ancestry and of modest social background. Lester Frank Ward (1841-1913). was born in Joliet, III., on June 18, 1841. Ferdinand Toennies. was born into a wealthy farmer's family in Nordfriesland in SchleswigHolstein, then under Danish rule Howard P. Becker (1899-1960).. that “change” does not necessarily imply “progress”. That change occurs in different ways, and that change proceeds in many different directions. Morgan saw societies as evolving through a number of stages. His principal attention was focused on technological factors, kinship systems, and property relations to social and political institutions; he described the progress of humankind through three main stages of evolution: 1.savagery, 2. barbarism and 3.civilization. Summer believed that social improvement could only come about through natural evolution of society and Criticism not by legislation. One criticism of unilinear evolution is the fact that not all societies have to go through the same stages. Some are able to Ward believed that both human beings and human skip stages through society had developed through eons of evolution, but the he maintained that once intellect has evolved in diffusion, spread of cultural humans, they gained the ability to help shape the trait from one subsequent evolution of social forms. society to another. Toennies perceived two periods in the history of the great systems of culture: a period of Gemeinshaft (rural and folklife) and Gesellshaft (cosmopolitan, rational urban life). Becker saw the transition as being from a sacred, traditionally oriented society to a secular society that evaluates customs and practices in terms of their gives direction on what coping mechanism to adopt to enhance future success. pragmatic outcomes. Robert Redfield (1897-1958). was born on Dec. 4, 1897, in Chicago, Ill., 1921. Redfield described folk society as small, isolated and homogenous with a strong sense of group solidarity. Gerhard Emmanuel Lenski (born August 13, 1924 in Washington, DC) is an American sociologist known for contributions to the sociology of religion, social inequality, and ecologicalevolutionary. Lenski maintain that continuity, innovation, and extinction are basic aspects of the evolutionary process and “evolution is essentially cumulative change: it involves the gradual addition of new elements to a continuing base. Rostow (1961). According to Rostow, growth and development to (October 7, 1916 – economic maturity proceed through the following February 13, 2003) stages: was an American 1. Traditional Setting Society. economist and 2. The preconditions for “take-off” political theorist 3. The take – off 4. The drive towards maturity 5. The age of high mass consumption Prominent for his role in the shaping of American policy in Southeast Asia during the 1960s, he was a staunch anticommunist, and was noted for a belief in the efficacy of capitalism and free enterprise. Rostow served as a major adviser on national security affairs under the Kennedy and Johnson administrations. James Vernon Smith (July 23, Smith identified the following general characteristics 1926 - June 23, of evolutionary theories: 1973) 1. Holism – studying the whole unit rather than its parts 2. Universalism – change is natural, universal, perpetual and ubiquitous, and requires no explanation 3. Potentiality – change is inherent and endogenous in the unit undergoing change. 4. Directionality – change is progressive. 5. Determinism – change is inevitable and irreversible for all units. 6. Gradualism – change is continuous, cumulative growth. 7. Reductionism – “laws of succession” are uniform and the basic topic of change is everywhere the same.