“…For instance, the need for an extensive period of deliberate practice (Ericsson et al, 1993) is now established as a basic requirement for the development of expertise, but the concept of deliberate practice is relatively new to the science of human skill acquisition and expertise. Similarly, the current focus on psychological qualities such as grit (Duckworth et al, 2007) and self-regulation (McCardle et al, 2019), perceptual cognitive issues such as the quiet eye (Vickers, 2016) and representative learning designs (Pinder et al, 2011), and environmental factors such as quality of the early developmental environment (Baker et al, 2009) and the role of athletic parents (Wilson et al, 2019) each reflect relatively new developments in this field of research.…”