Section of the choice of research methods
Social science research methods, mainly experimental survey method (Experiment), the investigation report (Survey), the file log analysis (Archival Analysis), Historical Research (History) and case studies (Case Study) and so on, every research strategy has unique advantages and disadvantages. Yin (1994) that the choice of research methods Subject to the following three kinds of case may be: the type of research questions, the researchers have done in the actual events of the manipulation of the above in order to and research focused on contemporary or historical phenomenon.
The case study is part of a species of empirical exploration (Empirical Inquiry), to real-life setting the following What happened based on the phenomenon, especially in the boundaries between phenomenon and context are not very clear position to carry out the following. Case study is based on a individual, or to an organizations, such as: a family, a community, a school or a tribal and other targeted research a particular act or a question of ways. Case Research emphasis on exploring the current events or issues, with particular emphasis on the truth of the incident, the problem causes the formation of and so has done a profound and comprehensive study (Lin re, 2001). As early as an 870-year Harvard University School of Law created by this method, the aim is to train students to think the principle of legal doctrine. This method was originally large Used for medicine, used to study the case of patients; later, in psychology, sociology, business administration One after another with this method. The case studies in accordance with its objectives, while providing careful classification, only the one General term the circumstances of any case studies involving more than descriptive, exploratory and explanatory goals, one project alone marked as to the direction of the case studies, not only inadequate, but also rare. All in all, the case study method of mesh Standard set is to understand their research units, repetitive lives of living matter, or that the important matters of the Department of Were carried out in-depth exploration and analysis to explain the status quo, or describe the changes enough to affect the exploration and growth factors Interactive situation, so case studies should be part of longitudinal research approach, revealed during the development of a phenomenon (Wang Arts, 1999).
Case studies of classification, Jackman Health (1998) that can be divided into exploratory (Exploratory) studies, narrative Type (Descriptive) studies, and the cause and effect type (Causal) study. Explanations are as follows:
Exploratory research
When the researchers need more information, and the need to make a temporary assumption becomes more clear, the research Those who will carry out an exploratory study research. Most of its reliance on qualitative data collection technology, in business research Study the indian, used widely, including secondary data analysis, empirical investigation, Encounter Group (Focus Group), the second-order Section design.
Narrative-style research
Use the time for when the researchers need to understand some of the characteristics of the phenomenon or research subjects in order to address a specific question time. The simplest descriptive study is to deal with a single variable or hypothesis, in addition to describing the concern among many variables Department. When the researchers to conduct narrative research, to be defined for these variables, make the appropriate sampling, and Lee to use statistical techniques to test these hypotheses.
Causal-style research
In the causal-type research center, we must assume that a variable X is caused by another variable Y reasons, so the researchers must collect data to confirm or disprove this assumption, while researchers must also be controlled in addition X and Y other than the Variables. To confirm a causal relationship between X and Y, must satisfy the following three condition: 1. X and Y are relations exist. 2. The relationship is asymmetric, that is, X causes Y to change the change, but change will not result in X change Y. 3. Does not on what the action of other factors, X will cause changes in Y change.
In qualitative research reliability is repeatability, is divided into internal reliability and external reliability: Firstly, the inherent reliability: Data collected by the collection, analysis and interpretation of data is a letter, if a letter you can the study said that the inherent reliability of high. Since this study the researchers for data collection who is also a data analysis and interpretation, from the research data collection, analysis to explain the researchers that the permeability Professor Raffel and guidance, information providers, ongoing discussions to ensure that the study has good internal reliability. Secondly, reliability: external reliability refers to the researcher the possibility of the same or similar situations to copy the indian research problems, such as the fruit was the researchers described in full compliance with the previous researchers have the same situation, re-do the same one The case, then researchers should receive the same findings and conclusions. Therefore, In addition to the reliability of this study depend on the researchers review the follow-up of nuclear.
|
