A style of leadership where the leader is instantly influenced (postively or negatively) by interactions with his/her leaders or peers. When their interactions go badly for them, these individuals proceed to sulk in their offices or roam the corporate location in a bad frame of mind, stopping only to ream their teams or pick on team members to excoriate (usually for failings that are more imaginary than real). When things go well for them they suddenly morph into relentlessly cheerful, happy people, and praise their teams effusively.
Given that humans tend to remember bad interpersonal encounters more than they remember positive encounters, the long-term results are usually a wary, demotivated team, and a frustrated leader, who often ends up suggesting a variant of the approach "the beatings will continue until morale improves"...