Equitation science is defined as "the application of scientific methods to assess objectively the welfare of horses undergoing training." It promotes an evidence-based understanding of horse-rider interactions. The goal is to apply valid, quantitative scientific methods to identify what training techniques are ineffective or painful, and to improve the horse-rider relationship by explaining horse training from a learning theory perspective that removes anthropomorphism and emotiveness. It can aid the training process by clarifying the roles of positive versus negative reinforcement, punishment, and by identifying stimuli that provoke unwanted responses or pain in horses. Equitation science uses psychological principles such as learning theory as well as equine ethology and biomechanics. It uses objective measures to score performance during training and competitions and identifies techniques that may result in equine suffering.