Numeric and normative feedback (scores and comparative information) is more persuasive and effective than text feedback with only “self-relevant data”, regardless of the source. That’s according to a 2006 study looking at the best methods for providing feedback to ‘leaders’:
This study investigated the influence of feedback format (text versus numeric/normative) on leaders’ reactions to 360 degree feedback received from bosses, direct reports, and peers. Leaders who received numeric/normative feedback reacted more favourably than those who received text feedback regardless of the source. [â€¦] These findings suggest that, contrary to predictions of feedback intervention theory (FIT), feedback that provided scores and comparative information was reacted to more positively than text feedback that provided only self-relevant data. In addition, negative reactions to feedback were detrimental to future changes.