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Acute stressful situations where the stress experienced is severe is a cause of change psychologically to the detriment of the well-being of the individual, such that symptomatic derealization and depersonalization, and anxiety and hyperarousal, are experienced. [8]
Schematic of diathesis–stress model. The diathesis-stress model, also known as the vulnerability–stress model, is a psychological theory that attempts to explain a disorder, or its trajectory, as the result of an interaction between a predispositional vulnerability, the diathesis, and stress caused by life experiences.
Stress hormones are secreted by endocrine glands to modify one's internal environment during the times of stress. [1] By performing various functions such as mobilizing energy sources, increasing heart rate, and downregulating metabolic processes which are not immediately necessary, stress hormones promote the survival of the organism. [1]
Susan Kay Nolen-Hoeksema (May 22, 1959 – January 2, 2013) [1] [2] was an American professor of psychology at Yale University.Her research explored how mood regulation strategies could correlate to a person's vulnerability to depression, with special focus on a depression-related construct she called rumination as well as gender differences.
Czeisler was one of Tibor Czeisler and Wanda Victoria Murzyn's three children. [1] In 1993, Czeisler married Theresa Lynn Shanahan M.D. They now have three children and live in the Boston area. [1]
In mechanics and thermodynamics, thermal stress is mechanical stress created by any change in temperature of a material. These stresses can lead to fracturing or plastic deformation depending on the other variables of heating, which include material types and constraints. [1]
There are several exercises designed to develop mindfulness meditation, which may be aided by guided meditations "to get the hang of it". [9] [70] [note 3] As forms of self-observation and interoception, these methods increase awareness of the body, so they are usually beneficial to people with low self-awareness or low awareness of their bodies or emotional state.
For the thin-walled assumption to be valid, the vessel must have a wall thickness of no more than about one-tenth (often cited as Diameter / t > 20) of its radius. [4] This allows for treating the wall as a surface, and subsequently using the Young–Laplace equation for estimating the hoop stress created by an internal pressure on a thin-walled cylindrical pressure vessel: