Documents are written, pictorial or audio material, these are secondary sources as they have been collected, they can analyze and interpret the data for their own purposes.
There are three types of documents:
Personal
Public
Historical
Personal documents can be:
Letters
Diaries
Suicide notes
Photos
Personal documents can be used to depict meanings, opinions, feelings and experiences.
Public documents can come from different areas of life, such as official statistics ( government ) and mass media sources.
Historical documents can be from public of personal past, this means they can compare trends in social change.
Once the sociologist has their aim and hypothesis, they will need to select a sample which is representative of the of the topic to be considered.
The researcher needs to analyze material in a systematic manner, they will categorize this data.
Interpretivists tend to like documents as as it is classified as qualitative data, this means they take into account meaning and experiences of people , this means they are higher in validity.
Positivists say documents are unreliable and unrepresentative, they can be quantitative data such as statistics and therefore easier to analyze. They can also convert the data if it is qualitative.
Documents can be useful as there is a four point checklist to determine the validity of the document:
Authenticity
Credibility
Meaning
Representativeness
Practical issues of documents is:
Readily available
Cheap and not time consuming
Accessibility to information that's not readily available