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Psychological Properties Of Ya - Papers

Psychological Properties Of Ya


Studies on the physical and wning
The act of yawning has been observed in all vertebrates, and occurs in humans as early as minutes after birth, so it must have some definitive physiological purpose. Until recently, most scientists believed yawning was a respiratory function, triggered by a surplus of carbon dioxide in the bloodstream. In the past decade, however, studies have suggested that yawning acts as a mediator of activity and arousal levels. The evaluation that follows will examine three such studies and the evidence they contribute to this hypothesis.
The first study (1) examined the connection between yawning and activity on a physical level. Previous research had drawn ...

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trials which measured skin conductance and heart rate, two physical correlates of arousal. In each trial, subjects pressed a button when they felt a yawn coming on, and equipment in a nearby room took readings from sensors attached to their fingertips. The first trial measured skin conductance, the second trial measured heart rate, and the third trial used an electromyogram with electrodes attached to the subjects’ masseter muscles to verify that they were yawning when they said they were. Each subject was alone in a room for the course of all three trials. In addition, a control group of 20 students were tested for skin conductance and heart rate while intentionally performing different physical aspects of yawning, such as opening the mouth wide and taking deep breaths. All results were analyzed using a Friedman ANOVA test.
The results of the experiment partailly concur with the authors’ prediction. In the experimental group, it was found that skin ...

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on the subject, such as the rat experiment previously mentioned. However, previous research suggested that yawning increased because of arousal; this study implies that arousal increases because of yawning. Furthermore, it is reasonable to question whether the testing methods of this experiment may have had an effect on the results. The study was conducted in a lab, and subjects were adorned with sensors and electrodes, creating an unnatural setting which may have made the subjects anxious (and consequently increased arousal levels).
Even though the study described above may have its imperfections, it is not completely useless in furthering our knowledge of why people yawn. It ...

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PAPER DETAILS
Added: 1/10/2007 09:55:10 PM
Category: Miscellaneous
Type: Premium Paper
Words: 2211
Pages: 9

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