The general objective is to understand how familiar concepts are encoded in memory during a brief experience and retrieved at later points in time. Our current working model assumes that the presentation of a familiar word activates its prestored representations as well as other related representations. These representations concern visual, phonemic, and meaning information and, therefore, they differ in type. Within types, there are differences in quantity. Familiar words activate few to many related representations, and the number activated is an important determinant of the likelihood of their later recall. The model specifies when and how implicitly activated and related concepts become encoded and how they influence retrieval. Hence, the model and the related data describe how prior knowledge about a familiar concept influences its memorability. The proposed project is focused on several broad areas: (1) Understanding the independent roles that visual, phonemic, and meaning information play in encoding and retrieval, (2) Understanding the role of prior knowledge and its role in remembering, (3) Exploring the influence of encoding context in determining what is encoded about the presented stimulus, (4) Investigating the nature of retrieval processes in recall and recognition. Our findings are relevant to understanding memory in normals, and have implications for theories of memory and for practitioners in the mental health field who rely on memory principles in their dealing with clients.

Agency
National Institute of Health (NIH)
Institute
National Institute of Mental Health (NIMH)
Type
Research Project (R01)
Project #
5R01MH016360-18
Application #
3374698
Study Section
Psychobiology and Behavior Research Review Committee (BBP)
Project Start
1976-12-01
Project End
1988-11-30
Budget Start
1986-12-01
Budget End
1987-11-30
Support Year
18
Fiscal Year
1987
Total Cost
Indirect Cost
Name
University of South Florida
Department
Type
Schools of Arts and Sciences
DUNS #
City
Tampa
State
FL
Country
United States
Zip Code
33612
Nelson, Douglas L; Goodmon, Leilani B; Akirmak, Umit (2007) Implicitly activated memories are associated to general context cues. Mem Cognit 35:1878-91
Nelson, Douglas L; Fisher, Serena L; Akirmak, Umit (2007) How implicitly activated and explicitly acquired knowledge contribute to the effectiveness of retrieval cues. Mem Cognit 35:1892-904
Nelson, Douglas L; Goodmon, Leilani B; Ceo, David (2007) How does delayed testing reduce effects of implicit memory: context infusion or cuing with context? Mem Cognit 35:1014-23
Fisher, Serena L; Nelson, Douglas L (2006) Recursive reminding: effects of repetition, printed frequency, connectivity, and set size on recognition and judgments of frequency. Mem Cognit 34:295-306
Nelson, Douglas L; Dyrdal, Gunvor M; Goodmon, Leilani B (2005) What is preexisting strength? Predicting free association probabilities, similarity ratings, and cued recall probabilities. Psychon Bull Rev 12:711-9
Nelson, Douglas L; McEvoy, Cathy L; Schreiber, Thomas A (2004) The University of South Florida free association, rhyme, and word fragment norms. Behav Res Methods Instrum Comput 36:402-7
Goodmon, Leilani B; Nelson, Douglas L (2004) Strengthening the activation of unconsciously activated memories. Mem Cognit 32:804-18
Nelson, Douglas L; McEvoy, Cathy L; Pointer, Lisa (2003) Spreading activation or spooky action at a distance? J Exp Psychol Learn Mem Cogn 29:42-52
Nelson, Douglas L; McKinney, Vanesa M; McEvoy, Cathy L (2003) Are implicitly activated associates selectively activated? Psychon Bull Rev 10:118-24
Nelson, Douglas L; Goodmon, Leilani B (2003) Disrupting attention: the need for retrieval cues in working memory theories. Mem Cognit 31:65-76

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