Please briefly describe the advantages and disadvantages of the experimental investigation method.

Advantages of experimental investigation method:

(1) Experimental investigation under the premise of strictly designing and minimizing interference variables can help investigators obtain relatively objective information.

(2) The purpose is clear, and reasonable experimental design for different investigation items can explore the unclear causal relationship.

(3) In laboratory experiments, due to the strict control of various variables, its inherent effectiveness is quite high.

Disadvantages of experimental investigation method:

(1) The choice of experimental objects and experimental environments is difficult to be fully representative, and it is also difficult for researchers to fully and effectively control the experimental process.

(2) The experimental investigation method has higher requirements for experimenters.

(3) Experimental investigation will take a long time, because a lot of experiments are needed.