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Related Concept Videos

Stress Concentrations01:24

Stress Concentrations

537
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
537
Stress Concentrations01:13

Stress Concentrations

490
The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
490
Stress Prevention and Stress Management Techniques III01:25

Stress Prevention and Stress Management Techniques III

226
Regular exercise and meditation serve as essential tools in managing stress and promoting physical and mental well-being.
The Role of Exercise in Stress Management
Regular physical activity is essential for reducing stress and promoting cardiovascular health. Exercise strengthens the heart, enhances blood flow, keeps blood vessels flexible, and helps lower blood pressure, all of which reduce the body's stress response. Research shows that adults who exercise regularly have nearly half the...
226
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

419
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
419
Stress Prevention and Stress Management Techniques I01:26

Stress Prevention and Stress Management Techniques I

207
Stress prevention and management are crucial for maintaining well-being and building resilience. Techniques to manage stress include cultivating qualities like conscientiousness, a sense of personal control, and self-efficacy. Each of these traits significantly reduces stress and promotes healthier lifestyle choices and outcomes.
Conscientiousness
Conscientious individuals tend to be organized, responsible, and disciplined. They prioritize completing tasks and following structured routines,...
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Stress Prevention and Stress Management Techniques IV01:26

Stress Prevention and Stress Management Techniques IV

166
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
166

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Related Experiment Video

Updated: Dec 13, 2025

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
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Acute Stress Improves Concentration Performance.

Cathy Degroote1, Adrian Schwaninger2,3, Nadja Heimgartner4

  • 1Biological Work and Health Psychology, Department of Psychology, University of Konstanz, Konstanz, Germany.

Experimental Psychology
|July 31, 2020
PubMed
Summary
This summary is machine-generated.

Acute stress improved concentration performance in healthy males. This enhancement was linked to increased state anxiety and lower cortisol changes, suggesting complex psycho-physiological interactions.

Keywords:
Trier Social Stress Testalpha-amylasecognitive stress appraisalconcentration performancecortisold2 Test of Attentionstate anxiety

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Area of Science:

  • Psychology
  • Neuroscience
  • Physiology

Background:

  • Acute stress can impact cognitive functions, but its specific effects on concentration remain debated.
  • Understanding the mechanisms behind stress-induced cognitive changes is crucial for managing performance.

Purpose of the Study:

  • To investigate the impact of acute psychosocial stress on concentration performance.
  • To explore the underlying physiological (salivary cortisol, alpha-amylase) and psychological (state anxiety, stress appraisal) mechanisms.

Main Methods:

  • 47 healthy males underwent either the Trier Social Stress Test or a control task.
  • Concentration performance was measured using the d2 Test of Attention pre- and post-task.
  • Salivary cortisol, alpha-amylase, state anxiety, and stress appraisal were repeatedly assessed.

Main Results:

  • Participants exposed to psychosocial stress showed significantly greater improvement in concentration performance compared to the control group.
  • Improved concentration was associated with higher increases in state anxiety and lower changes in cortisol levels.
  • No significant relationship was found between concentration performance and changes in alpha-amylase or cognitive stress appraisal.

Conclusions:

  • Acute psychosocial stress can enhance concentration performance in healthy males.
  • State anxiety and cortisol reactivity appear to be key modulators of this stress-induced cognitive improvement.
  • These findings highlight the complex interplay between psychological and physiological responses to stress affecting cognitive function.