Four contributory factors that need to be considered when conducting impact studies

1. The relevance of your subject,actual value of the study on your respective fied
2. The objective of the study
3. The reference/s and the influence to conduct the study 
4. Time, it is very important to know the timeline. This plays a big factor with the quality and scope of the study as some studies need years to complete and bring value with the results.

When conducting an Impact Study you need to look at the four following factors:

1. What is the object of Measurement?

We need to determine some variable through which we can actually measure the outcome of the study

2. What is the time frame?

Every Study needs a certain time frame. We need to determine the start and end of the study which will eventually help us to plan and evaluate

3. Who would be the assessors?

A team of certified and knowledgeable assessors will need to be pee-determined who will be able to assess and evaluate the study.

4. When should impact evaluation start?

We should also agree upon the stage of the study at which the evaluation should start. Should it be in between? at the end ? or from the start? It all depends on the kind of study being conducted and its objectives