Stronx Consulting tests its salespeople on listening skills and then implements a training program to teach all of them to be better listeners. At the conclusion of the last training session, it conducts a posttest to measure listening skills again. Based on the results, the training manager reports that the training program increased listening skills by a significant amount. Which of the following statements represents the main weakness in the manager's conclusion?

The actual impact of the training can only be evaluated by comparing the performance of employees who underwent training and those who did not.

The actual impact of the training can only be evaluated by comparing the performance of employees who underwent training and those who did not.

Explanation:

The reason is that when you conduct a post-lecture listening test then you are actually testing how much the person has absorbed the lecture which will not be reflected in the work that he will be assigned in near future. The main purpose of the training session is to make the workforce able to actually reflect the training lecture in the future work. This means if I want to increase the efficiency of the workforce then I will prefer to see whether or not the workforce which was trained have increased its work efficiency than the person who were not trained.