1. Experimental research is to systematically manipulate the change of one variable under controlled conditions to study the influence of the change of this variable on other variables.
2. Quasi-experimental research is called quasi-experiment or quasi-experiment because it can't be randomly divided into groups or set up parallel control groups due to actual conditions, and it can't fully meet the above conditions.
3. Non-experimental method refers to the research method of collecting research data in the laboratory without strict control (systematic manipulation of independent variables). There are many forms, mainly including: historical research method, correlation method, case method, development method, post-interpretation research method and non-experimental field research method.
Extended data:
Experimental research, also known as experimental research, is a method of collecting direct data.
Select the appropriate group, control the related factors by different means, and test the difference of reaction between groups.
Researchers use the principles and methods of scientific experiments, the main purpose of which is to establish the causal relationship between variables. The general practice is that researchers put forward a tentative hypothesis of causality in advance and then test it through experimental operations. It is a comparative research method, which evaluates its effect on one or more variables through the changes of one or more variables.
Compared with the standard field experiment, the design and implementation principles of class experiment are basically the same except the grouping of research objects. It is impossible to set up a control group randomly in class I experiments, but it is still a non-random control group.
Its characteristics are: because the actual situation does not allow, the research objects are often not randomly grouped; The number of research objects is large and the scope is wide; There is no parallel control, and sometimes there is internal control or self control.
Non-experimental methods mainly include: historical research method, correlation method, case method, development method, post-explanation research method and non-experimental field research method.
The purpose of this paper is to infer the relationship between variables from the corresponding changes of hypothetical independent variables and dependent variables. Due to the lack of direct manipulation of hypothetical independent variables, the inferred relationship is not as certain as the conclusion obtained by experimental methods.
Baidu Encyclopedia-Experimental Research
Experimental study on Baidu encyclopedia
Baidu Encyclopedia-Non-experimental Method