What are the commonly used methods of research in sociology?

They use many different methods in order to describe, explore and understand social life. The methods used by social scientists can generally be subdivided into two broad categories. Quantitative methods are concerned with attempts to quantify social phenomena and collect and analyse numerical data, and focus on the links among a smaller number of attributes across many cases. Qualitative methods, on the other hand, emphasise personal experiences and interpretation over quantification, are more concerned with understanding the meaning of social phenomena and focus on links among a larger number of attributes across relatively few cases. While very different in many aspects, both qualitative and quantitative approaches involve a systematic interaction between theories and data.





Common tools of quantitative researchers include surveys, questionnaires, and secondary analysis of statistical data that has been gathered for other purposes (for example, censuses or the results of social attitudes surveys). Commonly used qualitative methods include focus groups, participant observation, and other techniques.








Ordinary human inquiry


Before the advent of sociology and application of the scientific method to social research, human inquiry was mostly based on personal experiences, and received wisdom in the form of tradition and authority. Such approaches often led to errors such as inaccurate observations, overgeneralisation, selective observations, subjectivity and lack of logic.





Foundations of social research


Social research (and social science in general) is based on logic and empirical observations. Charles C. Ragin writes in his Constructing Social Research book that "Social research involved the interaction between ideas and evidence. Ideas help social researchers make sense of evidence, and researchers use evidence to extend, revise and test ideas". Social research thus attempts to create or validate theories through data collection and data analysis, and its goal is exploration, description and explanation. It should never lead or be mistaken with philosophy or belief. Social research aims to find social patterns of regularity in social life and usually deals with social groups (aggregates of individuals), not individuals themselves (although science of psychology is an exception here). Research can also be divided into pure research and applied research. Pure research has no application on real life, whereas applied research attempts to influence the real world.





There are no laws in social science that parallel the laws in the natural science. A law in social science is a universal generalization about a class of facts. A fact is an observed phenomenon, and observation means it has been seen, heard or otherwise experienced by researcher. A theory is a systematic explanation for the observations that relate to a particular aspect of social life. Concepts are the basic building blocks of theory and are abstract elements representing classes of phenomena. Axioms or postulates are basic assertions assumed to be true. Propositions are conclusions drawn about the relationships among concepts, based on analysis of axioms. Hypotheses are specified expectations about empirical reality which are derived from propositions. Social research involves testing these hypotheses to see if they are true.





Social research involves creating a theory, operationalization (measurement of variables) and observation (actual collection of data to test hypothesized relationship).





Social theories are written in the language of variables, in other words, theories describe logical relationships between variables. Variables are logical sets of attributes, with people being the 'carriers' of those variables (for example, gender can be a variable with two attributes: male and female). Variables are also divided into independent variables (data) that influences the dependent variables (which scientists are trying to explain). For example, in a study of how different dosages of a drug are related to the severity of symptoms of a disease, a measure of the severity of the symptoms of the disease is a dependent variable and the administration of the drug in specified doses is the independent variable. Researchers will compare the different values of the dependent variable (severity of the symptoms) and attempt to draw conclusions.





Types of explanations


Explanations in social theories can be idiographic or nomothetic. An idiographic approach to an explanation is one where the scientists seek to exhaust the idiosyncratic causes of a particular condition or event, i.e. by trying to provide all possible explanations of a particular case. Nomothetic explanations tend to be more general with scientists trying to identify a few causal factors that impact a wide class of conditions or events. For example, when dealing with the problem of how people choose a job, idiographic explanation would be to list all possible reasons why a given person (or group) chooses a given job, while nomothetic explanation would try to find factors that determine why job applicants in general choose a given job.





Types of inquiry


Social research can be deductive or inductive. The inductive inquiry (also known as grounded research) is a model in which general principles (theories) are developed from specific observations. In deductive inquiry specific expectations of hypothesis are developed on the basis of general principles (i.e. social scientists start from an existing theory, and then search for proof). For example, in inductive research, if a scientist finds that some specific religious minorities tend to favour a specific political view, he may then extrapolate this to the hypothesis that all religious minorities tend to have the same political view. In deductive research, a scientist would start from a hypothesis that religious affiliation influenced political views and then begin observations to prove his theory.