What about using appraisals for training indicators?

What about using appraisals for training indicators? That training might be remedial, or it could be for expanding the position, or moving the employee to a higher level.

If the performance evaluation points to deficits that I certainly think the sooner these evaluations are done, and the more frequent, the better for both the employee and the employer. If you were bringing on a new hire how often might you do a performance appraisal?