“…Achievement goal researchers have adopted measures to assess constructs related to pleasant emotional states, such as enjoyment, satisfaction, interest, positive affect, and flow, and unpleasant emotional states, such as anxiety, distress, negative thoughts, negative affect, and boredom (e.g., Mouratidis, Vansteenkiste, Lens, & Vanden Auweele, 2009). Bortoli and colleagues were the first to examine the feasibility and the benefits of investigating pleasant/functional and unpleasant/dysfunctional psychobiosocial states as related to motivational climate and individuals' achievement goals in youth sport (Bortoli et al, 2009(Bortoli et al, , 2011(Bortoli et al, , 2012 and physical education (Bortoli & Robazza, 2007).…”