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SPONSOR/MONITOR'S REPORT
Biosciences & Protection Division
NUMBER(S)Biobehavioral Performance Branch 2485 Gillingham Dr. Brooks City-Base, TX 78235
AFRL-RH-BR-TR-2008-0005
DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release: distribution unlimited. Public Affairs Case file no. 07-201
SUPPLEMENTARY NOTES14. ABSTRACT There are few objective assessments of the impact of sleep loss on team performance. The present study was designed to quantify the effects of fatigue on teams performing a complex task and to compare team data with individual data on a similar task. Participants were trained on a complex air battle management task (both in individual and team mode) for one week and then experienced a 36-hr period of sustained wakefulness. Forty-minute scenarios (individual and team) were iteratively completed throughout each experimental period alongside traditional cognitive performance tasks (e.g., simple math processing). Individual data showed the well-established performance reduction resulting from sleep loss and circadian variation at both the simple and complex task levels. Significant decrements were seen for both process measures (e.g., information gathering) and outcome measures (e.g., number of targets attacked) after sleep-loss on the complex task. In contrast, team scores on similar measures after sleep loss, did not degrade, and in some cases showed improvements relative to baseline (indicating a continuing team building process). Individual performance (both simple and complex) was significantly degraded during the early morning hours. Team data did not show the expected performance decrements.