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The 21 st century will be remembered with the problems made by the Covid-19 pandemic and its role as a major stressor causing serious damage to health indicators.There have been various pandemics on Earth up to our time.However, the pandemic caused by coronavirus is considered the most severe: a number of adverse phenomena such as infection of people regardless of their social status, place of residence, financial situation, background, intellectual level, and most importantly age, the number of cases ending in death, the occurrence of serious health problems in those who have had disease, reduction of human life, shortening, inability of the immune system to recover over a long period of time, increased cognitive dysfunctions, significant psychological distress and behavioral changes caused.The study reflects the impact of pandemic stress on psychophysiological indicators in adolescents aged 12 and 13.It should be noted that before the pandemic, in February 2020, the indicators of psychological arousal, attention and memory were studied in 12-and 13-year-old adolescents who live in Khachmaz and Sheki.After the pandemic, in October 2022, the same adolescents (who were now 14 and 15 years old) were involved in the same psychophysiological studies.Changes caused by pandemic stress (especially social isolation and online learning) were investigated.

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