Breaking down the question
The question asks you to explain the emergence of sociology as a separate discipline, and it supplies the two threads that must run through your answer — rationality and scientific temper. The command word "explain" calls for a clear account of the intellectual and social conditions that gave rise to the discipline, organised around these two ideas.
The key is to show that sociology did not arise in a vacuum. It grew out of the wider transformation of European thought in which reason replaced faith and tradition as the ground of knowledge, and out of the upheavals of industrial and political revolution that made society itself a problem demanding systematic study. The fuller intellectual background is set out in our notes on modernity and the emergence of sociology.
At 10 marks you should connect the rise of rational, scientific thinking to the deliberate project of founding a science of society.
How to approach it
Open by defining sociology as the systematic, empirical study of society, and state that its birth in the nineteenth century was inseparable from the triumph of rationality and the scientific method.
Then develop two strands. First, the intellectual conditions — the Enlightenment's faith in reason, the decline of theological explanation, and the prestige of natural science, which inspired thinkers to study society by the same methods. Second, the social conditions — the industrial and French revolutions, which shattered the old order and created new problems of order, class and change that begged for objective analysis.
Illustrate with Comte's positivism and Durkheim's insistence on treating social facts as things, then close by noting how rationality and scientific temper together secured sociology's claim to be a distinct discipline.
Model answer
Sociology emerged as a distinct discipline in nineteenth-century Europe as the direct offspring of rationality and the scientific temper. Before this, society and human conduct were largely explained by reference to religion, custom or the will of God. The distinctive achievement of the founders of sociology was to insist that society could be studied objectively, by observation and reason, in the same spirit as the natural world.
The intellectual ground was prepared by the Enlightenment. Thinkers of the eighteenth century placed reason, rather than revelation or tradition, at the centre of knowledge, and held that the social world, like nature, was governed by discoverable laws. The spectacular success of the natural sciences — physics, chemistry and biology — supplied a powerful model. If the movement of planets obeyed laws that reason could uncover, why should human society not do the same? This confidence in observation, evidence and logical explanation is what we mean by the scientific temper, and it became the founding attitude of the new discipline.
Auguste Comte, who coined the term "sociology", expressed this ambition most clearly. His law of three stages held that human thought passes from the theological, through the metaphysical, to the positive or scientific stage, in which knowledge rests on observed facts and their relations. Sociology, for Comte, was to be the crowning positive science, applying rigorous method to society. Emile Durkheim carried the project further by insisting that sociologists treat "social facts as things" — external, observable and to be explained by other social facts. His study of suicide showed that even the most private act could be analysed statistically and explained by rates and social conditions rather than individual whim, demonstrating that a genuine science of society was possible.
Rationality alone, however, does not explain why the discipline appeared when it did. The great social upheavals of the age made society itself a pressing problem. The Industrial Revolution uprooted people from villages, created factories, cities and a new working class, and generated visible misery and disorder. The French Revolution overturned the political order and raised urgent questions about authority, equality and the basis of social cohesion. These transformations dissolved the certainties of the traditional order and forced thinkers to ask how society holds together, how it changes, and how order can be restored. Sociology arose precisely as a rational, systematic attempt to answer such questions.
In this way rationality and scientific temper together gave sociology its distinct identity. Rationality provided the conviction that society is intelligible to reason; the scientific temper supplied the method of observation, comparison and explanation; and the crises of modernity supplied the subject matter. Marked off from philosophy by its empirical method and from history by its search for general patterns, sociology established itself as an autonomous discipline devoted to the scientific understanding of social life.
Examiner's perspective
Examiners reward answers that keep both threads named in the question — rationality and scientific temper — visible throughout, rather than drifting into a general history of ideas. The strongest scripts link the intellectual climate of the Enlightenment to the concrete social upheavals of industrialisation and revolution, showing why the discipline was both possible and necessary.
Naming Comte and Durkheim with precise illustrations, such as the law of three stages or the rule to treat social facts as things, signals genuine command. A closing sentence that marks sociology off from philosophy and history secures the point that it emerged as a distinct discipline, which is the heart of what the question asks.