The information-processing model

The information-processing model describes how performers in sport receive, analyse, and respond to information from their environment.

The four stages of the model

The model consists of four interconnected stages that build on each other, allowing performers to turn sensory information into skilled movements.

The four stages:

1. Input - This is the first stage where information enters the system through the senses. For example, visual cues come from the eyes, auditory cues from the ears, and sensory cues from touch. Previous experiences or intuition can also contribute to this stage, providing a foundation for what follows.

2. Decision-making - Here, the brain analyses the input to choose the best response. This involves comparing the information against stored knowledge in memory and selecting an appropriate action. As a result, the chosen response is prepared for execution, and relevant details are stored for future use.

3. Output - In this stage, the decision is put into action through muscle movements. This turns thought into physical performance.

4. Feedback - The final stage involves receiving information about the outcome of the action. This helps evaluate success and informs adjustments for next time, creating a loop back to the input stage.

These stages work together progressively: input provides the raw data, decision-making processes it, output executes it, and feedback refines it.

Short-term and long-term memory

Memory plays a key role in the decision-making stage of information processing, as it stores and retrieves information needed for quick responses. There are two main types of memory systems that work together, each with distinct capacities and durations.

Short-term memory (STM)

Short-term memory is a temporary storage system that holds a limited amount of information for a short time. It acts like a workspace where incoming data from the input stage is held briefly while the brain decides what to do.

Characteristics of STM:

• STM can typically store up to around seven pieces of information.
• This information lasts for approximately 18-30 seconds unless actively maintained.

Long-term memory (LTM)

Long-term memory is a more permanent storage system that can hold vast amounts of information over extended periods, sometimes for a lifetime. It serves as a library of skills and experiences that performers draw upon during decision-making.

Characteristics of LTM:

• LTM has virtually unlimited capacity.
• Information stored here comes from repeated experiences and can be recalled when needed.
• Experienced performers build richer LTMs through practice, giving them an advantage in recognising patterns quickly.

Transferring information between STM and LTM

Information moves from STM to LTM through a process called rehearsal, which involves repeating the information repeatedly to encode it deeply. This repetition strengthens connections in the brain, making the information easier to retrieve later. As a result, athletes who practise skills often develop stronger LTMs, leading to more automatic and effective responses in competitions.

Limited-channel capacity and processing hypotheses

The brain has limits on how much information it can handle at once, which affects performance in sports where multiple stimuli compete for attention. This concept, known as limited-channel capacity, explains why overload can lead to mistakes, such as missing a key cue in a fast-paced game.

Understanding limited-channel capacity

Limited-channel capacity refers to the brain's restriction on processing only a certain amount of information simultaneously. When too many stimuli arrive at once, the system can become overwhelmed. This overload causes slower reactions or errors, as the brain struggles to prioritise. As a result, performance suffers, highlighting the need for athletes to focus on the most relevant inputs.

Single-channel hypothesis

The single-channel hypothesis is a theory suggesting that the brain processes stimuli one at a time, like a single queue. According to this idea, when multiple stimuli arrive, one must be fully dealt with before moving to the next.

Key features of the single-channel hypothesis:

• This creates a bottleneck, delaying responses.
• The hypothesis implies that attempting simultaneous processing leads to inefficiency.

Multi-channel hypothesis

In contrast, the multi-channel hypothesis proposes that the brain can handle different types of information at the same time using separate processing channels. This allows for more efficient multitasking when stimuli are dissimilar.

Key features of the multi-channel hypothesis:

• Performance only declines when similar tasks compete for the same channel, such as two visual cues.
• This theory suggests athletes can train to improve channel separation for better handling of complex environments.

These hypotheses help explain why beginners might feel overwhelmed, while experts - with more efficient processing - perform better under pressure.

Intrinsic and extrinsic feedback

Feedback is essential in the final stage of the information-processing model, providing performers with details about their actions' outcomes. It comes in two main forms, each offering unique insights that help refine skills and decision-making.

Intrinsic feedback

Intrinsic feedback is information that arises from within the performer, based on the internal feel of a movement. It relies on sensory receptors in muscles, joints, and skin to detect how an action "feels."

Characteristics of intrinsic feedback:

• This type of feedback is immediate and personal, such as sensing balance during a gymnastics routine or the tension in a golf swing.
• It helps athletes self-correct without external input, building intuition over time.

Extrinsic feedback

Extrinsic feedback comes from outside sources, providing an external perspective on performance. This can enhance learning by offering objective views that the performer might miss.

Characteristics of extrinsic feedback:

• Sources include coaches giving verbal advice, teammates' reactions, or even crowd responses.
• This feedback is particularly useful for beginners, as it guides improvements and reinforces positive actions.

By combining intrinsic and extrinsic feedback, performers can loop information back into the input stage, continuously improving their information processing and overall performance in sport.