The subjective experience of remembering in artificial grammar learning

The question of what processes are involved in artificial grammar learning has been the subject of a great deal of debate for nearly four decades. Neuropsychological and some behavioural data have found evidence for episodic memory processes such as recollection and familiarity in artificial grammar learning. To date all of this evidence has been found using objective techniques that do not rely on subjective reports. However, recollection and familiarity are associated with distinct phenomenal states that can be measured using the well-known "remember"-"know" procedure. This paper reports three experiments in which evidence was found for recollection and familiarity-based influences in artificial grammar learning using subjective reports of the experience of remembering. Subjective reports were not related to the similarity of the test items to the study items, suggesting that they do not merely reflect levels of confidence. The data are discussed with reference to multiple process models and a modified signal-detection model.