1, the predictability of the experiment lies in speculating the causal relationship between things.
Educational experiments focus on revealing the causal relationship of things variables, thus establishing a more explanatory theoretical system and laying a foundation for guiding practice. However, due to the particularity of educational activities, educational experiments are generally just a generalized causal speculation, that is, an action will lead to a certain result.
2. Pay attention to the operation of independent variables.
Educational researchers actively manipulate independent variables, observe the changes of dependent variables and collect data.
3. Control of irrelevant variables
In order to control other factors that may affect the dependent variable, a series of manual control methods are used in the experiment to control the factors that may affect the dependent variable. Such as the attitude of the subjects, historical factors, measurement methods, etc.
4. The long-term nature of the experimental process.
The experimental period is long, and a relatively complete educational phenomenon or behavior change process can be observed.
5. Experimental comparison
Another characteristic of the experiment is that at least two or more test groups are needed for comparison. The researchers control irrelevant variables and compare the influence of the change of independent variables on the dependent variables, so as to find out the relationship between independent variables and dependent variables.