How do you know if a young horse has the temperament to be a good performance horse?

Assessing whether a young horse has the temperament for performance work is one of the most practically important evaluations in the starting process, and experienced trainers develop the ability to read temperament indicators early that predict how a horse will handle training pressure, competition stress, and the specific demands of their intended discipline. Clinton Anderson identifies several consistent temperament indicators he looks for in young horses being evaluated for performance work. The first is how the horse responds to novel stimuli — does it investigate or flee? Horses that approach and investigate new things with curiosity rather than spooking and fleeing tend to be more trainable because they are actively gathering information about their environment rather than reacting to it. Investigation behavior in young horses correlates with the Left Brain temperament that Parelli associates with better training outcomes. The second indicator Anderson watches is recovery time after being startled. Every horse will spook at something. What matters for performance is how quickly it recovers — whether it settles within a few seconds or remains activated for extended periods. A horse that startles dramatically but recovers quickly is different from a horse that startles less dramatically but stays reactive for minutes. The former is usually easier to train to a high level than the latter. The third indicator is willingness to try — whether the horse experiments with responses to pressure and explores options when asked something new, or whether it locks up, freezes, or becomes increasingly anxious when pressure is applied. Horses that try — even if the initial tries are incorrect — learn faster than horses that shut down or escalate in response to pressure. Warwick Schiller adds the attachment indicator: does the horse show any preference for specific humans? Even in young, minimally handled horses, the beginnings of selective human attachment are visible. A horse that notices specific humans, that orients toward people rather than away, and that shows early signs of the kind of interest in people that Schiller associates with secure attachment potential tends to develop into a more willing and connected performance partner.