I have this question since my friend told me that if we have frequent appraisal such as 4 months or 6 months once, people will be turned to a money minded.But I am thinking this in another aspect like, people will be getting feedback and boost quickly than one year appraisal. We do not need to increase the salary much. But the token advancement would help them to get some refreshment.
how often do we need to do appraisal for a developer?
management
After being in management for a few years after being a developer for many years (and headed back TO development), I believe that regular, non-formal appraisal is important.  Not everyone needs this, but human nature dictates that saving this for once or twice per year is detrimental.  Everyone needs regular feedback, not only for motivational purposes, but just to help keep someone from straying too far off the path.  No one likes being kept in the dark on the value they're perceived to add (or improvements they need to make).