Ethical considerations in cognitive research

Key ethical issues

• Confidentiality - In case studies of brain-damaged patients, such as HM, protecting personal information is crucial to ensure confidentiality.
• Informed consent - Obtaining informed consent from participants like HM, who may have conditions like amnesia, can be challenging as they might not fully comprehend the study's purpose or risks.

Practical issues in research design and implementation

Challenges in measuring cognitive processes

• Ecological validity - Much cognitive research relies on laboratory experiments, raising issues around ecological validity and mundane realism in the tasks participants carry out.
• Control and operationalisation of variables - Researchers also face challenges with the control and operationalisation of variables.
• Measuring memory accurately - A key question is how we can accurately measure memory.

Reductionism and its limitations

How reductionism applies to memory

Studying memory in a laboratory setting can ignore the importance of the environment and other variables that affect cognitive processes in the real world.

Limitations of reductionism

This approach can lead to breaking down cognition into isolated parts, placing less importance on the interconnections between different brain regions or cognitive processes.

Comparisons between ways of explaining behaviour

Models of memory

Various models of memory, including the Multi-store model, Working Memory model, Levels of Processing model, and Reconstructive memory, provide different explanations for behaviour, focusing on either a series of structures or the processes involved in memory.

Psychology as a science

Scientific features in cognitive research

Cognitive psychology is considered one of the most scientific perspectives, adopting the scientific method to explain information processing. Its reliance on experiments and controls supports replicability and reliability, which are cornerstones of scientific investigation.

Cultural and gender issues

Influence on memory

• Cultural differences - Memory reconstruction can be influenced by cultural differences, as can digit span when studied cross-culturally.
• Gender stereotypes - Gender stereotypes can also influence how memory is reconstructed.

Sebastián and Hernández-Gil contemporary study

Nature-nurture debate

Evidence from both sides

• Nature - The case of HM suggests that the hippocampus plays an important inherent role in forming new memories, supporting the nature argument.
• Nurture - However, reconstructive memory emphasises how learned schemas and experiences, through interaction with the environment, help our memories develop.

Psychological understanding over time

Development of memory models

Baddeley's work studying short- and long-term memory later led to the working memory model. This model was subsequently expanded with the episodic buffer, illustrating how psychological knowledge about behaviour is built over time.

Advances in eyewitness testimony

More recent research into eyewitness testimony (EWT) has added to existing findings, enriching the debate around the reliability of witnesses.

Social control

Use in courtroom situations

The use of eyewitness testimony (EWT) and its manipulation through leading questions can occur in courtroom situations.

Psychological knowledge in society

Applications of memory research

• Psychological knowledge can be used to help individuals with dementia.
• It can also assist those with dyslexia.
• It can aid in developing revision techniques for students.
• Knowledge can also contribute to the debate on the reliability of eyewitness testimony (EWT).

Socially sensitive research

Issues in studying dementia

The study of memory loss due to dementia presents socially sensitive issues for both the individual and their families.