Plastic Pasteur pipettes, also referred to as transfer pipettes, have their stems and bulbs in the form of a single piece made of plastic. There are different sizes. The volumes are usually marked on the stem, though the markings are rather crude and are not particularly accurate.
Research Methods in Sociology â An Introduction. An introduction to research methods in Sociology covering quantitative, qualitative, primary and secondary data and defining the basic types of research method including social surveys, experiments, interviews, participant observation, ethnography and longitudinal studies. Why do social research?
Examine the reasons why some sociologists choose to use structured interviews when conducting research. There are three types of interviews; structured, unstructured and semi-structured interviews.The most commonly used types of interviews by sociologists are structured interviews and unstructured interviews.Structured interviews have various advantages, therefore, some sociologists, mainly Positivist sociologists, choose to use structured interviews when conducting research.nother practical advantage, is that structured interviews are relatively cheap and easy to administer, so large quantities of interviews can be carried out, meaning that are large-scale, so sociologists, especially Positivistsâ, can generalise data as the data found will be representative.