Clear goals: Expectations and rules are discernible and goals are attainable and align appropriately with one’s skill set and abilities. Moreover, the challenge level and skill level should both be high. Concentration: A high degree of concentration on a limited field of attention. A loss of the feeling of self-consciousness: The merging of action and awareness. Distorted sense of time: One’s subjective experience of time is altered. Direct and immediate feedback: Successes and failures are apparent, so behavior can be adjusted as
