Consider the following statements about training programme.
1. To be of practical use, industrial training must transfer to job-performance
2. Learning research suggests that transfer of training is more likely to occur between situations that have many identical elements in common
3. Workers and supervisors may believe they have benefited from training without manifesting any genuine improvement
4. The importance of evaluation of a training programme is so great that absence of some strategy of evaluation is bound to strike at the very roots of training
Which of the above sentences are correct?