Train supervisors to reduce rating

Train supervisors to reduce rating errors such as halo, leniency, and central tendency.
Have raters compile positive and negative critical incidents as they occur.

Results (Malay) 2:

Penyelia kereta api untuk mengurangkan kesilapan Kedudukan seperti halo, kemurahan hati, dan kecenderungan pusat.
Ada penilai menyusun insiden kritikal positif dan negatif kerana ia berlaku.