Abstract
In prior research on false autobiographical beliefs and memories, subjects have been asked to imagine fictional events and have been exposed to false evidence that indicates that the fictional events occurred. But what are the relative contributions of imagination and false evidence toward false belief and memory construction? In the present study, subjects observed and copied various simple actions; then they viewed doctored videos that suggested that they had performed extra actions and they imagined performing some of those and some other actions. Subjects returned 2 weeks later for a memory test. False evidence or imagination alone was often sufficient to cause belief and memory distortions; in combination, they appeared to have additive or even superadditive effects. The results bear on the mechanisms underlying false beliefs and memories, and we propose legal and clinical applications of these findings.
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Bernstein, D. M., Laney, C., Morris, E. K., & Loftus, E. F. (2005a). False beliefs about fattening foods can have healthy consequences. Proceedings of the National Academy of Sciences, 102, 13724–13731.
Bernstein, D. M., Laney, C., Morris, E. K., & Loftus, E. F. (2005b). False memories about food can lead to food avoidance. Social Cognition, 23, 11–34.
Chambers, K. L., & Zaragoza, M. S. (2001). Intended and unintended effects of explicit warnings on eyewitness suggestibility: Evidence from source identification tests. Memory & Cognition, 29, 1120–1129.
Corwin, D. L., & Olafson, E. (1997). Videotaped discovery of a reportedly unrecallable memory of child sexual abuse: Comparison with a childhood interview videotape 11 years before. Child Maltreatment, 2, 91–112.
Desjardins, T., & Scoboria, A. (2007). “You and your best friend Suzy put Slime in Ms. Smollett’s desk”: Producing false memories with self-relevant details. Psychonomic Bulletin & Review, 14, 1090–1095.
Dreifus, C. (2007, October 2). Proving that seeing shouldn’t always be believing. New York Times, p. D2.
Finke, R. A., Johnson, M. K., & Shyi, G. C. (1988). Memory confusions for real and imagined completions of symmetrical visual patterns. Memory & Cognition, 16, 133–137.
Gallo, D. A., Roediger, H. L., III, & McDermott, K. B. (2001). Associative false recognition occurs without strategic criterion shifts. Psychonomic Bulletin & Review, 8, 579–586.
Garry, M., Manning, C. G., Loftus, E. F., & Sherman, S. J. (1996). Imagination inflation: Imagining a childhood event inflates confidence that it occurred. Psychonomic Bulletin & Review, 3, 208–214.
Garry, M., & Polaschek, D. L. L. (2000). Imagination and memory. Current Directions in Psychological Science, 9, 6–10.
Garry, M., & Wade, K. A. (2005). Actually, a picture is worth less than 45 words: Narratives produce more false memories than photographs do. Psychonomic Bulletin & Review, 12, 359–366.
Geraerts, E., Bernstein, D. M., Merckelbach, H., Linders, C., Raymaekers, L., & Loftus, E. F. (2008). Lasting false beliefs and their behavioral consequences. Psychological Science, 19, 749–753.
Ghetti, S. (2003). Memory for nonoccurrences: The role of metacognition. Journal of Memory & Language, 48, 722–739.
Goff, L. M., & Roediger, H. L., III (1998). Imagination inflation for action events: Repeated imaginings lead to illusory recollections. Memory & Cognition, 26, 20–33.
Greene, E., Flynn, M., & Loftus, E. F. (1982). Inducing resistance to misleading information. Journal of Verbal Learning & Verbal Behavior, 21, 207–219.
Gudjonsson, G. H. (2003). The psychology of interrogations and confessions. Chichester, U.K.: Wiley.
Hart, R. E., & Schooler, J. W. (2006). Increasing belief in the experience of an invasive procedure that never happened: The role of plausibility and schematicity. Applied Cognitive Psychology, 20, 661–669.
Henkel, L. A., & Carbuto, M. (2008). Remembering what we did: How source misattributions arise from verbalization, mental imagery, and pictures. In M. R. Kelley (Ed.), Applied memory (pp. 213–234). Haupauge, NY: Nova Science Publishers.
Hyman, I. E., Jr., Husband, T. H., & Billings, F. J. (1995). False memories of childhood experiences. Applied Cognitive Psychology, 9, 181–197.
Hyman, I. E., Jr., & Pentland, J. (1996). The role of mental imagery in the creation of false childhood memories. Journal of Memory & Language, 35, 101–117.
Johnson, M. K., Foley, M. A., Suengas, A. G., & Raye, C. L. (1988). Phenomenal characteristics of memories for perceived and imagined autobiographical events. Journal of Experimental Psychology: General, 117, 371–376.
Johnson, M. K., Hashtroudi, S., & Lindsay, D. S. (1993). Source monitoring. Psychological Bulletin, 114, 3–28.
Johnson, M. K., & Raye, C. L. (1981). Reality monitoring. Psychological Review, 88, 67–85.
Johnson, M. K., & Raye, C. L. (2000). Cognitive and brain mechanisms of false memories and beliefs. In D. L. Schacter & E. Scarry (Eds.), Memory, brain, and belief (pp. 35–86). Cambridge, MA: Harvard University Press.
Johnson, M. K., Raye, C. L., Wang, A. Y., & Taylor, T. H. (1979). Fact and fantasy: The roles of accuracy and variability in confusing imaginations with perceptual experiences. Journal of Experimental Psychology: Learning, Memory, & Cognition, 5, 229–240.
Kassin, S. M., & Kiechel, K. L. (1996). The social psychology of false confessions: Compliance, internalization, and confabulation. Psychological Science, 7, 125–128.
Kelly, J. E., & Nace, D. (1994). Digital imaging and believing photos. Visual Communication Quarterly, 1, 4–7.
Landau, J. D., & von Glahn, N. (2004). Warnings reduce the magnitude of the imagination inflation effect. American Journal of Psychology, 117, 579–593.
Lindsay, D. S. (2008). Source monitoring. In J. H. Byrne (Series Ed.) & H. L. Roediger III (Vol. Ed.), Learning and memory: A comprehensive reference. Vol. 2: Cognitive psychology of memory (pp. 325–348). Amsterdam: Elsevier.
Lindsay, D. S., Hagen, L., Read, J. D., Wade, K. A., & Garry, M. (2004). True photographs and false memories. Psychological Science, 15, 149–154.
Loftus, E. F., & Guyer, M. J. (2002, May/June). Who abused Jane Doe? The hazards of the single case history, Part I. Skeptical Inquirer, 26, 24–32.
Loftus, E. F., & Palmer, J. C. (1974). Reconstruction of automobile destruction: An example of the interaction between language and memory. Journal of Verbal Learning & Verbal Behavior, 13, 585–589.
Loftus, E. F., & Pickrell, J. E. (1995). The formation of false memories. Psychiatric Annals, 25, 720–725.
Loftus, G. R. (1978). On interpretation of interactions. Memory & Cognition, 6, 312–319.
Loftus, G. R., & Masson, M. E. J. (1994). Using confidence intervals in within-subjects designs. Psychonomic Bulletin & Review, 1, 476–490.
Lynn, S. J., Pintar, J., Stafford, J., Marmelstein, L., & Lock, T. (1998). Rendering the implausible plausible: Narrative construction, suggestion, and memory. In J. de Rivera & T. R. Sarbin (Eds.), Believed-in imaginings: The narrative construction of reality (pp. 123–143). Washington, DC: American Psychological Association.
Mazzoni, G., & Kirsch, I. (2002). Autobiographical memories and beliefs: A preliminary metacognitive model. In T. J. Perfect & B. L. Schwartz (Eds.), Applied metacognition (pp. 121–145). Cambridge: Cambridge University Press.
Mazzoni, G., & Memon, A. (2003). Imagination can create false autobiographical memories. Psychological Science, 14, 186–188.
McCabe, D. P., & Smith, A. D. (2002). The effect of warnings on false memories in young and older adults. Memory & Cognition, 30, 1065–1077.
Nash, R. A., & Wade, K. A. (2009). Innocent but proven guilty: Eliciting internalized false confessions using doctored-video evidence. Applied Cognitive Psychology, 23, 624–637.
Pezdek, K., Blandon-Gitlin, I., & Gabbay, P. (2006). Imagination and memory: Does imagining implausible events lead to false autobiographical memories? Psychonomic Bulletin & Review, 13, 764–769.
Pezdek, K., Finger, K., & Hodge, D. (1997). Planting false childhood memories: The role of event plausibility. Psychological Science, 8, 437–441.
Pezdek, K., & Lam, S. (2007). What research paradigms have cognitive psychologists used to study “false memory,” and what are the implications of these choices? Consciousness & Cognition, 16, 2–17.
Roediger, H. L., III, & McDermott, K. B. (1995). Creating false memories: Remembering words not presented in lists. Journal of Experimental Psychology: Learning, Memory, & Cognition, 21, 803–814.
Scoboria, A., Mazzoni, G., Kirsch, I., & Relyea, M. (2004). Plausibility and belief in autobiographical memory. Applied Cognitive Psychology, 18, 791–807.
Seamon, J. G., Philbin, M. M., & Harrison, L. G. (2006). Do you remember proposing marriage to the Pepsi machine? False recollections from a campus walk. Psychonomic Bulletin & Review, 13, 752–756.
Thomas, A. K., Bulevich, J. B., & Loftus, E. F. (2003). Exploring the role of repetition and sensory elaboration in the imagination inflation effect. Memory & Cognition, 31, 630–640.
Thomas, A. K., & Loftus, E. F. (2002). Creating bizarre false memories through imagination. Memory & Cognition, 30, 423–431.
Tousignant, J. P., Hall, D., & Loftus, E. F. (1986). Discrepancy detection and vulnerability to misleading postevent information. Memory & Cognition, 14, 329–338.
Wade, K. A., & Garry, M. (2005). Strategies for verifying false autobiographical memories. American Journal of Psychology, 118, 587–602.
Wade, K. A., Garry, M., Read, J. D., & Lindsay, D. S. (2002). A picture is worth a thousand lies: Using false photographs to create false childhood memories. Psychonomic Bulletin & Review, 9, 597–603.
Wade, K. A., Sharman, S. J., Garry, M., Memon, A., Mazzoni, G., Merckelbach, H., & Loftus, E. F. (2007). False claims about false memory research. Consciousness & Cognition, 16, 18–28.
Watson, J. M., McDermott, K. B., & Balota, D. A. (2004). Attempting to avoid false memories in the Deese/Roediger-McDermott paradigm: Assessing the combined influence of practice and warnings in young and old adults. Memory & Cognition, 32, 135–141.
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Nash, R.A., Wade, K.A. & Lindsay, D.S. Digitally manipulating memory: Effects of doctored videos and imagination in distorting beliefs and memories. Memory & Cognition 37, 414–424 (2009). https://doi.org/10.3758/MC.37.4.414
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DOI: https://doi.org/10.3758/MC.37.4.414