Source ROCs are (typically) curvilinear: comment on Yonelinas (1999)

Area of Science:

• Cognitive Psychology
• Human Memory
• Memory Monitoring

Background:

• A dual-process model by Yonelinas (1999) predicted linear source-identification receiver operating characteristics (ROCs) based on recollection as a threshold process.
• Prior research reported data consistent with these linear ROC predictions, influencing the understanding of source monitoring.

Purpose of the Study:

• To investigate the shape of source-identification receiver operating characteristics (ROCs) under varied encoding and test conditions.
• To challenge the dual-process model's predictions by examining alternative explanations for source monitoring performance.
• To support the source-monitoring framework by highlighting the role of qualitative memory characteristics.

Main Methods:

• Empirical data collection across diverse encoding and testing scenarios.
• Analysis of source-identification receiver operating characteristics (ROCs) to determine their linearity or curvilinearity.
• Comparison of results with predictions from the dual-process model and the source-monitoring framework.

Main Results:

• Source-identification receiver operating characteristics (ROCs) were found to be curvilinear across various experimental conditions.
• The observed curvilinearity contradicts the linear ROCs predicted by the dual-process model.
• Data align with the source-monitoring framework's emphasis on qualitative memory differences.

Conclusions:

• Curvilinear source-identification ROCs indicate that memory characteristics, beyond simple familiarity, are crucial for accurate source monitoring.
• The findings challenge the dual-process model and support the source-monitoring framework's explanation for memory discrimination.
• Qualitative aspects of memory representations significantly influence the ability to identify the source of information.