The splitting factor that determines whether the effect of physiological arousal is small and gradual (inverted U hypothesis) or large and dramatic (catastrophic)
Catastrophe theory (Hardy 1987): 'Think of a personal example where increased arousal/stress initially improved performance but then dropped off drastically'
A multi-dimensional model of sports state anxiety where: Somatic anxiety has an inverted U-shaped relationship with performance. Self-confidence has a positive linear relationship with performance. Cognitive state anxiety has a negative linear relationship with performance. This model led to the creation of CSAI-2