Military officer-training academies, such as the Royal Military Academy Sandhurst , go to great lengths to accept only candidates who show the highest potential to lead well.  Personal characteristics that are associated [ by whom? ] with successful leadership development include leader motivation to learn, a high achievement drive and personality traits such as openness to experience, an internal focus of control, and self-monitoring . In order to develop individual leaders, supervisors or superiors must conduct an individual assessment. 
The solidifying behavior depends on the alloy composition. Pure metals solidify at a certain temperature, forming crystals of one phase. Eutectic alloys also solidify at a single temperature, all components precipitating simultaneously in so-called coupled growth . Non-eutectic compositions on cooling start to first precipitate the non-eutectic phase; dendrites when it is a metal, large crystals when it is an intermetallic compound. Such a mixture of solid particles in a molten eutectic is referred to as a mushy state. Even a relatively small proportion of solids in the liquid can dramatically lower its fluidity.