This article is interesting and adds to the debate about dominance based training or even those based on leadership concepts.
“The “alpha” concept of showing dominance when training a horse doesn’t coincide with what equitation science research is revealing, scientists say.”
This is the original research – http://www.j-evs.com/article/S0737-0806(17)30005-9/fulltext
Quote – Highlights
“It is unlikely that horse–horse social status translates to analogues of human–horse interactions.
The concept of leadership as advocated in many training manuals proves to be unreliable in the horse.
Horses’ responses to training are more likely a result of reinforcement rather than a result of humans attaining high social status and a leadership role.
Knowledge of horses’ natural behavior and learning capacities are more reliable in explaining training outcomes than the application of dominance and leadership concepts.”
So it can be seen that we need a good understanding of equine ethology and learning theory as it relates to training horses.