>>>According to Youngs, one obvious upshot of this research is that training programs for principals in university or professional-development programs need to emphasize interpersonal skills as well as leadership skills. "The focus," he said, "would be on how principals could increase their knowledge of setting a healthy, productive school climate and understanding ways that their actions and leadership can impact new teachers' attitudes and outcomes.">>>>
People go into admin... in the vast majority of cases... because they don't like teaching and/or they want/need more money and don't want to "work their way" up the pay scale. I doubt that you can "teach" people so motivated the social skills, ethics, etc, etc. that an effective principal requires.
It's no accident that $$$ reformers want principals w. *no* teaching experience ( and , of course, no social skills and no ethics).
A better way of undermining this trend ( of abominable principals) would involve promoting "master teachers" after extensive experience in the trenches ( i.e. 10 yrs or more) and require them to keep "one foot" in the profession by carrying a part-time teaching load. This should make everyone happy: it gets rid of bad teachers ( They don't want to hang around for 10 years.) AND bad principals.
I think most people ( without an agenda) would see the logic of that. State legislators: are you listening?