Psychological Stress Responses

Psychological stress responses are the coordinated emotional, cognitive, and physiological changes that arise when people perceive demands as exceeding their coping resources. Stress appraisal activates the sympathetic nervous system and the hypothalamic-pituitary-adrenal axis, increasing heart rate and alertness while releasing hormones such as adrenaline and cortisol; recovery normally follows when the perceived threat subsides. In psychology, studying these responses helps explain how acute stress can support attention and rapid action, whereas persistent or poorly regulated activation may affect mood, sleep, cognition, and health. Research informs assessment, resilience training, psychotherapy, and interventions designed to improve coping and restore regulatory balance.

Psychological Stress Responses - Related Videos

Research

JoVE Journal - Medicine

The Trier Social Stress Test Protocol for Inducing Psychological Stress

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Cited by 251 •

2011

This article describes a protocol for inducing psychological stress in participants, which enables researchers to measure psychological, physiological and neuroendocrine responses to stress within single participants or between groups.

Education

JoVE Core - Introduction to Psychology

Psychological Responses to Stress

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2025

Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...

Responses to Salt Stress

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2020

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients. Plant cell cytoplasm has a high solute concentration, which causes water to flow from the soil into the plant due to osmosis. However, excess salt in the surrounding soil increases the soil solute concentration, reducing the plant’s ability to take up water. High levels of...

Responses to Heat and Cold Stress

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2020

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes. When the environmental dynamics fall out of the optimal limit for a given species, changes in metabolism and functioning occur – and this is defined as stress. Plants respond to stress by initiating changes in gene expression - leading to adjustments in plant...

Ethics in Psychology Research

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2023

Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University When a researcher finds an interesting topic to study such as aggression, the goal is often to study it in a way that is as true to life as possible. However, researchers must act in an ethical manner. To do this, they must balance their research goals with the best interests of the participants. Ethics often enter into the planning process when researchers identify all of the ways they can...

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