Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE (DD-MM-YYYY)October 2006 5f. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)University of Georgia AHRP Laboratory Department of Psychology Athens, GA PERFORMING ORGANIZATION REPORT NUMBER ARL-CR-0580 SPONSOR/MONITOR'S ACRONYM(S) 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) U.S. Army Research Laboratory Human Research and Engineering Directorate Aberdeen Proving Ground, MD 21005-5425 SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTESThe contracting officer's representative (COR) is Linda Elliott, U.S. Army Research Laboratory, ATTN: AMSRD-ARL-HR-MW, Bldg 459, Aberdeen Proving Ground, MD 21005-5425. ABSTRACTThis report addresses the fitness of using icon-based systems to support decision making within a domain where the quality and reliability of the information are dynamically changing. Specifically, the study examined the use of iconic and noniconic display forms to communicate information fidelity levels to decision makers for the purpose of supporting land navigation judgments. The results indicated that graphic and animated icons, as well as traditional digital display formats, produced accurate navigation judgments when information fidelity was high. In contrast, graphic and animated icon formats produced highest performance when information fidelity was moderate and/or low. These results are evaluated in the context of creating useful iconic display principles that may be applied to complex and uncertain decision environments where the fidelity of the information used to make decisions is in flux.
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