Information Processing in Skilled Performance: Principles and Stages

Information Processing in Skilled Performance

Introduction

Understanding how humans process information is fundamental to the study of skilled performance in psychology. This topic explores the conceptual model of information processing, focusing on decision-making, reaction time, attention, and memory as they relate to human performance in various contexts, such as sports and learning environments.

Student Goals

• Appreciate the ways humans process information: Recognize the complexity and variety of information processing in skilled tasks.

• Understand principles of reaction time and influencing factors: Learn what affects how quickly and accurately decisions are made.

• Comprehend how attention influences performance: Explore the role of sensory input and focus in skilled actions.

• Apply principles to teaching and coaching: Use knowledge of human performance to improve instruction and skill acquisition.

Information-Processing Approach

Overview

Psychologists conceptualize the human brain as a processor of information, similar to a computer. This approach helps explain how sensory input is transformed into skilled movement and decision-making. The model is especially useful in understanding rapid, complex actions such as those required in sports or emergency situations.

• Information-processing system: Involves sequential stages that convert input (stimuli) into output (responses).

• Applications: Used to analyze performance in activities like baseball, basketball, and sprinting, where quick decisions are essential.

Stages of Information Processing

Sequential Stages

The information-processing model divides human performance into three main stages. Each stage represents a step in transforming sensory input into a motor response.

• Stimulus-Identification Stage

• Response-Selection Stage

• Response-Programming Stage

Stimulus-Identification Stage

This initial stage involves detecting and identifying a stimulus from the environment. It is primarily a sensory process, relying on information from sources such as vision, audition, and touch.

• Key Point: The system determines whether a stimulus has occurred and what it is.

• Example: A baseball player visually identifies the pitch type as it leaves the pitcher's hand.

Response-Selection Stage

Once the stimulus is identified, the system must decide what response to make. This stage involves choosing the appropriate action from several possible alternatives.

• Key Point: The system selects the best response based on the identified stimulus and context.

• Example: A basketball player decides whether to pass, shoot, or dribble after receiving the ball.

Response-Programming Stage

In the final stage, the chosen response is organized and initiated. The system prepares the motor commands necessary to execute the selected action.

• Key Point: The system translates the decision into coordinated muscle movements.

• Example: A sprinter's muscles contract to begin running after the starting signal.

Reaction Time and Human Performance

Definition and Importance

Reaction time is the interval between the presentation of a stimulus and the initiation of a response. It is a critical measure in understanding the efficiency of the information-processing stages.

• Key Point: Shorter reaction times indicate more efficient processing and are essential in high-speed activities.

• Example: The time it takes for a runner to start moving after hearing the starting gun.

Table: Stages of Information Processing

Stage	Main Function	Example in Sports
Stimulus-Identification	Detect and recognize stimulus	Seeing the ball approach
Response-Selection	Choose appropriate response	Deciding to swing or not
Response-Programming	Initiate and organize movement	Executing the swing

Additional info:

• The information-processing model is foundational in cognitive psychology and motor learning.

• Parallel and serial processing may occur, depending on the complexity of the task.

• Laboratory methods, such as measuring reaction time, help scientists study these stages.