Libet's experiment: A complex replication.

Area of Science:

• Neuroscience
• Philosophy of Mind
• Cognitive Science

Background:

• Libet's experiment (1980s) is a cornerstone in the study of consciousness, free will, and decision-making.
• Despite its influence, a comprehensive, full-scale replication has been lacking.
• Previous Libet-style studies often examined isolated components rather than the experiment's full complexity.

Purpose of the Study:

• To conduct a complex, full-scale replication of Libet's original experiment.
• To meticulously document the methodology, including deviations from the original.
• To compare replication results with Libet's seminal findings.

Main Methods:

• Adherence to Libet's original methodology where possible, with detailed explanations for any divergences.
• Utilizing electroencephalography (EEG) to measure brain activity, specifically the readiness potential.
• Employing introspective reports to capture subjective experience of decision-making.

Main Results:

• Replication of Libet's core findings regarding the temporal relationship between the readiness potential and conscious intention.
• Observed substantial differences in specific result categories, including introspective reports and the incidence of readiness potentials.
• Identified methodological challenges and areas for improvement in Libet-style experiments.

Conclusions:

• The replication supports the general findings of Libet's experiment concerning the neural correlates of decision-making.
• Methodological variations can significantly impact specific outcomes, such as subjective reports and the detection of readiness potentials.
• Recommendations are provided for refining future research methodologies in this domain.