Influence (2) sport (1) âge (1) Instruction and study (1) Children (1) Success (1) Struggle (1) Pleasure (1) Perspective (1) Performance (1) Perception (1) Parents (1) Orientation (1) Failure (Psychology) (1) Face (1) Comprehension (1) Climatology (1) Climate (1) Boys (1) Age (1) Achievement motivation (1) Ability (1) Age (1) Attitudes (1) Sports (1) Practice (1) Performance (1) Experiments (1) Educación--Fines y objetivos (1) Fracaso (1)