Psychological factors like motivation, arousal, anxiety, personality, and concentration impact sports performance. Motivation can be intrinsic, from enjoyment of the sport, or extrinsic, from rewards. Performers need optimal arousal levels to perform at their best, but high arousal can cause anxiety. There are two types of anxiety - cognitive worries about ability and somatic physical symptoms. Personality is unique to each individual and coaches treat people differently based on personality. Concentration is the ability to focus and process information efficiently, while too much information or a lack of focus harms performance.