Unlike the important body of work on eyewitness memory, little research has been done on the accuracy and completeness of "earwitness" memory for conversations. The present research examined the effects of mode of presentation (audiovisual/ auditory-only) on witnesses' free recall for utterances in a criminal conversation at different retention intervals (immediate/delayed) within a single experiment. Different forms of correct recall (verbatim/gist) of the verbal information as well as different types of errors (distortions/fabrications) were also examined. It was predicted that participants in the audiovisual modality would provide more correct information, and fewer errors than participants in the auditory-only modality. Participants' recall was predicted to be impaired over time, dropping to a greater extent after a delay in the auditory-only modality. Results confirmed these hypotheses. Interpretations of the overall findings are offered within the context of dual-coding theory, and within the theoretical frameworks of source monitoring and fuzzy-trace theory.

Frequently, the only available evidence in 'language crimes' (e.g. verbal sexual harassment) is witness statements about criminal conversations. However, previous research has showed that recall for sentences in conversation is very poor. The main aim of this research was to find out how to solve this problem. The cognitive interview (CI) is an interview technique which has shown to be more effective in recalling criminal episodes than a comparison interview. In addition, our experience in research on the CI had been highly satisfactory; therefore, we decided to use the CI as a tool in the research on memory for conversation, so far ignored. Thus, this study tested, for the first time, whether the CI would be also successful in obtaining complete and accurate accounts for a criminal conversation. Different forms of correct recall (verbatim/gist) of the verbal information as well as different types of errors (distortions/fabrications) were also examined. It was predicted that the CI would elicit more correct information without an increase in errors than a comparison interview (i.e. a free-recall protocol). Results confirmed these hypotheses. Interpretations of the overall findings are offered within the context of theoretical principles concerning the retrieval of information from memory.

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