The concept of cognitive overload and models of memory

Cognitive overload occurs when the brain is overwhelmed by excessive information or demands, hindering effective processing and decision-making.

Key models explaining memory and cognitive overload

• Atkinson and Shiffrin's multi-store model - This model describes memory as a sequence of stores: sensory memory, short-term memory, and long-term memory.
• Baddeley and Hitch's working memory model - This model focuses on short-term memory as an active system with multiple components.
• Bell et al.'s environmental overload concept - This suggests that external stimuli can contribute to cognitive overload.

Assessment methods for cognitive overload

Techniques to measure cognitive overload

• Secondary task performance ability - This method assesses overload by measuring how well a person can perform a secondary task while engaged in a primary one.
• Self-reports as measurement tools - Individuals can provide subjective feedback on their perceived mental workload.

The impact of observation on workplace performance

The presence of others in a workplace can significantly influence an individual's performance.

Effects of observation on performance

• Social facilitation - Performance can change when individuals are observed by others.
• Audience effects - The mere presence of observers can alter worker behaviour.
• Co-action effects - Performing tasks alongside others can influence outcomes.

Workplace design based on ergonomic research and environmental factors

Creating a workplace that supports cognitive function and reduces stress is vital for productivity and well-being.

Principles of ergonomic workplace design

• Equipment aligned with cognitive processes - Tools and machinery should be designed to match human cognitive abilities.
• Feng Shui principles for space design - This ancient practice involves arranging furniture and environmental spaces.

Environmental factors affecting cognitive stress

• Colour schemes - Certain colours can influence mood and mental state.
• Noise levels - Excessive noise disrupts concentration and contributes to cognitive overload.
• Temperature control - Uncomfortable temperatures can distract workers and impair cognitive performance.
• Space management to prevent overcrowding - Overcrowded workspaces can heighten stress and reduce efficiency.