This study was designed to investigate the effects of aging on consciousness in recognition memory, using the Remember/Know/Guess procedure . Remembering and Knowing. In E. Tulving & F. I. M. Craik , The Oxford Handbook of Memory. Oxford University Press.). In recognition memory, older participants report fewer occasions on which recognition is accompanied by recollection of the original encoding context. Two main hypotheses were tested: the speed mediation hypothesis . The processing-speed theory of adult age differences in cognition. Psychological Review, (...) 3, 403–428) and the executive-aging hypothesis . An application of prefrontal cortex function theory to cognitive aging. Psychological Bulletin, 120, 272–292). A group of young and a group of older adults took a recognition test in which they classified their responses according to Gardiner, J. M., & Richarson-Klavehn, A. . Remembering and Knowing. In E. Tulving & F. I. M. Craik , The Oxford Handbook of Memory. Oxford University Press. remember-know-guess paradigm. Subsequently, participants completed processing speed and executive function tests. The results showed that among the older participants, R responses decreased, but K responses did not. Moreover, a hierarchical regression analysis supported the view that the effect of age in recollection experience is determined by frontal lobe integrity and not by diminution of processing speed. (shrink)

The binary remember/know task requires participants to dichotomize their subjective recognition experiences into those with recollection and those only with familiarity. Many variables have produced dissociative effects on remember/know judgments. In contrast, having participants make independent recollection/familiarity ratings has consistently produced parallel effects, suggesting the dissociations may be artifacts of using binary judgments. Bodner and Lindsay reported a test-list context effect with binary judgments: Increased remembering but decreased knowing for a set of critical items tested with a set of less-memorable (...) items. Here we report a parallel effect of test-list context on recollection and familiarity ratings, induced by a shift in response bias. We argue that independent ratings are preferable to binary judgments because they allow participants to directly report the co-occurrence of recollection and familiarity for each item. Implications for the measurement of self-reported recognition experiences, and for accounts of recognition memory, are discussed. (shrink)

Schizophrenia is a severe mental illness, which affects sense of identity. While the ability to have a coherent vision of the self relies partly on its reciprocal relationships with autobiographical memories, little is known about how memories ground “self-images” in schizophrenia. Twenty-five patients with schizophrenia and 25 controls were asked to give six autobiographical memories related to four self-statements they considered essential for defining their identity. Results showed that patients’ self-images were more passive than those of controls. Autobiographical memories underlying (...) self-images were less thematically linked to these self-images in patients. We also found evidence of a weakened sense of self and a deficient organization of autobiographical memories grounding the self in schizophrenia. These abnormalities may account for the poor cohesiveness of the self in schizophrenia. (shrink)