I love constructive criticism. I genuinely welcome it daily, but I also know the difference between some one who wants to help me grow & some one who is attempting to knock me down. Now I hear often "my staff just don't know how to take constructive criticism"... ... but have you ever evaluated HOW you deliver it? Everyone is different. I'm very direct so if someone delivers it that way, no harm done. However, some individuals need some further explanation to not feel attacked: Where was the error? How did you notice it? What was their process? How could it potentially be adapted to improve results? Then reassure them of what went well. & last but not least: YOUR. TONE. IS. EVERYTHING. Patronising someone isn't helpful. Encouraging them can be a game changer. Just some food for thought.