The influence of noise on production and fatigue, as related to pitch, sensation level, and steadiness of the noise.

Stress and well-being at work: A century of empirical trends reflecting theoretical and societal influences.

“…For instance, in the US the percentage of employees working in the service sector increased from around 65% in 1961 to over 85% in 2010. This shift reflected a decline of the manufacturing industry and led to changes in job requirements and job stressors, such as reduced physical and environmental stressors (e.g., Laird, 1933) and increased stressors related to emotional labor (Pugliesi, 1999).…”

“…One reason why JAP might reflect some societal trends more than others is that stress researchers have increasingly focused on white-collar and service-related employees rather than Stress and Well-Being 28 blue-collar employees. The early writings of Fish (1917) and Martin (1917) addressed bluecollar workers, and research on topics such as the effects of noise (Laird, 1933;Jerison, 1959) took place in industrial settings. Stress research during the past 50 years, however, has tended to emphasize issues relevant to white-collar, professional workers and to employees in servicerelated jobs.…”

“…To some degree, one can argue that the roots of stress research lie in studies that allow for stronger causal inference. Recall that the first JAP article we identified that included both a stressor and strain was Laird (1933) in an experiment study of loud noise. During the past 50 years, however, designs have been primarily quasi-experimental or correlational, in which studies have measured constructs and described relationships among stressors, moderators, and strains either at single points or, in limited instances, in longitudinal designs.…”

Noise and Human Performance

“…Results exactly opposite to those of the studies just referred to were reported by Kernhäuser 1927 Table 3. On the other hand a lathe type of tracking task, or a task requiring insertion of a stylus in moving holes (Laird, 1933) does show significant decrements.…”

Use of Commercial Broadcast Facilities for Emergency Dod Communications

“…Such a device is commercially available and in the telegrapher's terminology is called a Sequence Selector 3 . These devices are suitably noted in Figure 2 and Figure 3.…”