Before revision:  The data-driven nature of machine learning technique enabled a reliable estimate of the personality-safety behaviour relationship, which allowed this study to provide novel insight that nonlinearity may exist in the relationship between construction workers' personality traits and safety behaviour.
After revision:  The data-driven nature of machine learning technique enabled a reliable estimate of the personality-safety behaviour relationship, which allowed this research to find that a nonlinear effect exists in the relationship between construction workers' personality traits and safety behaviour.