In simple terms
A friendly intro before the formal notes — no formulas yet.
From Perception to Performance
An athlete's skilled action is the end product of a rapid mental process. This process involves taking in information from the environment, deciding what to do, and then executing the movement.
Imagine you're a tennis player about to return a serve. Your brain is like a high-speed computer. It sees the opponent toss the ball (input), instantly calculates the ball's likely speed and direction based on your opponent's body language and past matches (decision-making), sends the 'return serve' command to your limbs (output), and then you feel if the shot was good or bad, helping you adjust for the next point (feedback).
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First, the athlete's senses gather information from the environment. This is the 'input' stage, where they see the ball, hear the crowd, and feel their body's position.
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Next, the brain processes this information in the 'decision-making' stage. It filters out irrelevant noise, compares the situation to memories of past experiences, and selects the most appropriate action.
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Then, the brain sends instructions to the muscles to perform the chosen action. This is the 'output' stage, where the motor programme is executed, resulting in a physical movement like a kick, throw, or jump.
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Finally, the athlete receives 'feedback' about the outcome and quality of the action. This information, both internal and external, is used to refine the skill for future attempts.
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Key formulas
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Full topic notes
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Skill, Ability, and Technique
In sports science, the terms 'skill', 'ability', and 'technique' have precise meanings. Ability refers to the innate, genetically determined traits that are prerequisites for skilled performance, such as reaction time or dynamic strength. They are stable and enduring. Skill, on the other hand, is learned through practice. It is the capacity to achieve a predetermined result with maximum certainty and minimum outlay of energy or time. Technique is the specific way in which a skill is performed, often considered the 'textbook' method. An athlete can have a good technique but may not be skilled if they cannot perform it consistently under pressure.
Skill Classification: Skills are classified on continua to understand their demands.
Gross vs. Fine: Involves large muscle groups (gross, e.g., running) or small muscle groups (fine, e.g., archery release).
Open vs. Closed: Performed in an unpredictable environment (open, e.g., dribbling in football) or a predictable one (closed, e.g., a free throw in basketball).
Discrete vs. Serial vs. Continuous: Has a clear beginning and end (discrete, e.g., a shot put); consists of linked discrete skills (serial, e.g., a gymnastics tumble); has no clear beginning or end (continuous, e.g., cycling).
Externally vs. Internally Paced: The timing is controlled by external factors (externally, e.g., returning a tennis serve) or by the performer (internally, e.g., a javelin throw).
Information Processing and Response Time
To execute a skill, an athlete must process information. Welford's model (1968) provides a simple but powerful framework: input -> decision-making -> output. The time taken to complete this process is the response time, which is the sum of reaction time and movement time. Reaction time itself is influenced by the number of choices available, a relationship described by Hick's Law. When two stimuli are presented in quick succession, the brain's limited processing capacity can lead to a delay in responding to the second stimulus, known as the Psychological Refractory Period (PRP). This is often exploited in sport through feints and dummies.
Signal Detection Theory (SDT)
Perception is not a passive process. Athletes and officials must often make decisions under uncertainty, detecting a 'signal' (e.g., a foul, an offside player) from background 'noise' (e.g., crowd noise, legal movements). Signal Detection Theory provides a framework for understanding these decisions. It separates an individual's actual sensitivity to the signal from their bias in responding. This is quantified by two key parameters: d-prime () and the criterion (C).
Sensitivity (): The separation between the signal and noise distributions. A larger indicates better ability to discriminate signal from noise.
Criterion (C): The response threshold an individual sets. A low/lenient criterion means the observer is more likely to report a signal (more hits, but also more false alarms). A high/strict criterion means they are less likely to report a signal (fewer false alarms, but also more misses).
Motor Programmes and Feedback
A motor programme is a pre-structured set of commands stored in long-term memory. When retrieved, it allows an entire sequence of movements to be performed without conscious control. For very fast, ballistic actions, the system uses open-loop control, where the programme runs to completion without feedback. For slower, more precise actions, closed-loop control is used, allowing for adjustments to be made during the movement based on feedback. Feedback is essential for both learning and performance. It can be categorised in many ways, and a coach's ability to provide the right type of feedback at the right time is a critical skill.
Intrinsic Feedback: Sensory information from within the body (kinaesthesis).
Extrinsic Feedback: Information from an external source (coach, video, stopwatch).
Knowledge of Results (KR): Information about the outcome of the action.
Knowledge of Performance (KP): Information about the quality of the movement itself.
Positive vs. Negative Feedback: Focuses on what was done well (positive) or what was incorrect (negative).
Concurrent vs. Terminal Feedback: Given during the performance (concurrent) or after its completion (terminal).
For exam questions, always use specific sporting examples to illustrate your points. When asked to classify a skill, don't just state the classification (e.g., 'open'). Justify your choice by referring to the specific characteristics of the skill and the environment in which it is performed. For example, 'A pass in hockey is an open skill because the environment is constantly changing due to the movement of teammates and opponents.'
Worked examples
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A goalkeeper's simple reaction time to a single, central penalty shot is 210 ms. Using your knowledge of Hick's Law, explain the effect on the goalkeeper's reaction time if the penalty taker can now shoot to the left, right, or centre (three choices).
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State Hick's Law: Hick's Law states that reaction time increases as the number of stimulus-response choices increases. [1 mark]
A basketball referee reviews 100 foul calls. 40 were actual fouls (signal) and 60 were not (noise). The referee correctly identified 32 of the fouls (hits) and correctly identified 48 of the non-fouls (correct rejections).
- Calculate the referee's hit rate.
- Calculate the referee's false alarm rate.
- Briefly comment on the referee's response bias.
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Calculate Hit Rate:
How it all connects
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Glossary
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Revision flashcards
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Define 'skill' in a sporting context.
Skill is the consistent production of goal-oriented movements, which are learned and specific to the task. It involves both cognitive and motor elements.
Key takeaways
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Skill Classification: Skills are classified on continua to understand their demands.
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Gross vs. Fine: Involves large muscle groups (gross, e.g., running) or small muscle groups (fine, e.g., archery release).
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Open vs. Closed: Performed in an unpredictable environment (open, e.g., dribbling in football) or a predictable one (closed, e.g., a free throw in basketball).
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Discrete vs. Serial vs. Continuous: Has a clear beginning and end (discrete, e.g., a shot put); consists of linked discrete skills (serial, e.g., a gymnastics tumble); has no clear beginning or end (continuous, e.g., cycling).
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Externally vs. Internally Paced: The timing is controlled by external factors (externally, e.g., returning a tennis serve) or by the performer (internally, e.g., a javelin throw).
Practice — then mark it
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Test your knowledge on skill and information processing
Test your knowledge on skill and information processing
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