The relationship between subjective and objective measures of sleepiness.

Johnson, Laverne C.; Freeman, Charles R.; Spinweber, Cheryl L.; Gomez, Steven

doi:10.1037/e478842004-001

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Each participant was therefore required to complete the Stanford Sleepiness Scale (SSS) to indicate his or her level of sleepiness at the beginning of the experiment. The SSS is a single-item test scale that provides a reliable indication of a participant's feeling of sleepiness (Hoddes et al, 1973) and has been significantly correlated with vigilance, reaction time and the Multiple Sleep Latency Test (Glenville and Broughton, 1979;Johnson et al, 1988).…”

Section: Methodsmentioning

confidence: 99%

Preliminary investigation of the effect of peppermint oil on an objective measure of daytime sleepiness

Norrish

Dwyer

2005

International Journal of Psychophysiology

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Section: Methodsmentioning

confidence: 99%

Preliminary investigation of the effect of peppermint oil on an objective measure of daytime sleepiness

Norrish

Dwyer

2005

International Journal of Psychophysiology

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Benzodiazepines and caffeine: effect on daytime sleepiness, performance, and mood

Johnson

Spinweber²,

Gomez

1990

Psychopharmacology

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In a double-blind parallel group design, 80 young adult males were divided into eight treatment groups. Subjects received 15 or 30 mg flurazepam, 0.25 or 0.50 mg triazolam, or placebo at bedtime, and 250 mg caffeine or placebo in the morning for 2 treatment days. Two objective (Multiple Sleep Latency Test and lapses) and two subjective (Stanford Sleepiness Scale and Visual Analog Scale) measures of sleepiness, five performance tests, and two mood measures (Profile of Mood Scale and Visual Analog Mood Scale) were administered repeatedly on both days. Significant treatment effects were found for sleepiness but not for performance or mood. Early morning caffeine significantly antagonized next day hypnotic-induced drowsiness and enhanced alertness in the subjects who received bed-time placebo. Flurazepam, 30 mg, subjects were more sleepy than all other groups. Although not significantly different, the flurazepam, 30 mg, group demonstrated a trend toward poorer performance and a more negative mood than all other groups. Caffeine most improved performance of this group. In all groups, sleepiness was greatest and performance and mood poorest in early morning trials and caffeine was most effective at this time.

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The Efficacy of Naps as a Fatigue Countermeasure: A Meta-Analytic Integration

Driskell

Mullen

2005

Hum Factors

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Modern requirements for extended operations in aviation, transportation, the military, and industry have led to extensive research on countermeasures to mitigate the adverse effects of fatigue. The goals of this research were to (a) summarize and integrate existing research on naps as a fatigue countermeasure using meta-analysis, (b) identify the strength and significance of the effects of naps on performance and feelings of fatigue, and (c) identify factors that may moderate the effects of napping as a fatigue countermeasure. The results of these analyses can be used to predict nap efficacy as a function of length of the nap and the postnap interval. The results of these analyses also suggest an approach to work design that takes into account the optimal effects of naps as a fatigue countermeasure. Actual or potential applications of this research include the development of optimal work schedules to minimize fatigue and increase safety.

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The relationship between subjective and objective measures of sleepiness.

Cited by 3 publications

References 5 publications

Preliminary investigation of the effect of peppermint oil on an objective measure of daytime sleepiness

Preliminary investigation of the effect of peppermint oil on an objective measure of daytime sleepiness

Benzodiazepines and caffeine: effect on daytime sleepiness, performance, and mood

The Efficacy of Naps as a Fatigue Countermeasure: A Meta-Analytic Integration

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