What extent did the participants experience changes in attitudes, skills, or motivations as a result of the training?

it depends how the training was given:

1 if the training was interactive then the changes are most visible and accurate

2 if the training was more like a course given then the results are  much less determined

3 if the training was in between then we can not asseess

To find out the reasons for the commitment of the trainee session Is it a full-time trainee during the training - stand on the evaluation of the coach and the trainee and note any comments - to make sure the training hubs serving Are candidates 

youssef answer

The extent is variying and depending on many factors one of them is the intrinsic motivation of the trainee 

Application for the way of behave.