1, cognitive performance, which measures what trainees have learned from training, is generally evaluated by written examination.

2. Skill achievement, including skill learning and skill transformation, is usually judged by observation.

3. Emotional achievement, including motivation and attitude, is an important way to understand the trainees' response to training programs, which can be measured by investigation.

4. The performance results are used to determine the expenses paid by the company for the training plan.

5. Return on investment.