Further evidence for discrete-state mediation in recognition memory

Area of Science:

• Cognitive Psychology
• Psychonomic Science
• Memory Research

Background:

• Recognition memory models predict distinct Receiver Operating Characteristic (ROC) function patterns.
• The two high threshold model (2HTM) offers specific predictions about these patterns under varying memory strength conditions.

Purpose of the Study:

• To replicate and extend previous findings comparing the 2HTM with a continuous signal detection model.
• To assess model performance using confidence-rating responses and response times.
• To verify model discriminability through model-mimicry simulations.

Main Methods:

• Utilized an extended two-alternative forced-choice task with confidence ratings and response time measurements.
• Employed model-mimicry simulations to ensure clear model discrimination.
• Analyzed Receiver Operating Characteristic (ROC) functions derived from experimental data.

Main Results:

• The two high threshold model (2HTM) demonstrated a superior fit to the observed recognition memory data compared to a continuous signal detection model.
• Findings were consistent across both confidence-rating responses and associated response times.
• Model-mimicry simulations confirmed the experimental design's ability to differentiate between the competing models.

Conclusions:

• The two high threshold model (2HTM) provides a robust account of recognition memory processes.
• The findings support the 2HTM's predictions regarding ROC function differences across memory strength manipulations.
• The study validates the utility of confidence ratings and response times in evaluating memory models.