1. Editorial

   • Joseph B. Sidowski

   EditorialNotes Pages: 586 - 586

2. Introduction

   • Gerald P. Krueger
   • Carl E. Englund

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 587 - 591

3. The effects of task duration and work-session location on performance degradation induced by sleep loss and sustained cognitive work

   • Ronald J. Heslegrave
   • Robert G. Angus

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 592 - 603

4. Dynamic changes in work/rest duty cycles in a study of sleep deprivation

   • Harvey Babkoff
   • David R. Thorne
   • Frederick W. Hegge

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 604 - 613

5. The effects of progressive sleep loss on a lexical decision task: Response lapses and response accuracy

   • Harvey Babkoff
   • Sander G. Genser
   • Frederick W. Hegge

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 614 - 622

6. Trend and rhythm analysis of time-series data using complex demodulation

   • Helen C. Sing
   • David R. Thorne
   • Harvey Babkoff

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 623 - 629

7. Circadian rhythms determined by cosine curve fitting: Analysis of continuous work and sleep-loss data

   • Paul Naitoh
   • Carl E. Englund
   • David H. Ryman

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 630 - 641

8. STAR: A unique embedded performance assessment technique

   • Charles Graham
   • Mary R. Cook
   • Mary M. Gerkovich

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 642 - 651

9. Microcomputer analyses of performance on a portable, simple visual RT task during sustained operations

   • David F. Dinges
   • John W. Powell

   Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 652 - 655

10. A dual-probe recognition memory task for use during sustained operations

    • David F. Dinges
    • Wayne G. Whitehouse

    Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 656 - 658

11. Observations on the design and specification of a wrist-worn human activity monitoring system

    • Daniel P. Redmond
    • Frederick W. Hegge

    Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 659 - 669

12. Changing industry to continuous operations: Different strokes for different plants

    • Donald I. Tepas
    • Dennis R. Armstrong
    • Daniel V. Lezotte

    Special Section Methodological Approaches To The Study Of Sustained Work/Sustained Operations Pages: 670 - 676

13. On statements made in “Methodological issues in the assessment of sustained performance”

    • Diana R. Haslam

    Comments Pages: 677 - 677

14. A reply to Diana R. Haslam’s remarks

    • Ben B. Morgan

    Comments Pages: 677 - 678

15. A final statement on the methodology

    • Diana R. Hasla

    Comments Pages: 678 - 679

16. Announcement

    Announcement Pages: 680 - 680