COVID-19 pandemic measures may have caused reduced cognitive abilities among German students, study shows

Summary: This study investigated the impact of the COVID-19 pandemic on the cognitive abilities of secondary school students in Germany. The study compared the intelligence test performance of 424 students in Grades 7 to 9, tested after the first six months of the pandemic, to the results of two highly comparable student samples tested in 2002 and 2012.

The study found that the 2020 sample had substantially lower intelligence test scores than both the 2002 and 2012 samples. The study also retested the 2020 sample after another full school year of COVID-19-affected schooling in 2021 and found no signs of catching up to previous cohorts or further declines in cognitive performance.

It can be inferred from the article that the lower intelligence test scores of the 2020 sample may have been caused by the prolonged disruption of regular schooling due to the COVID-19 pandemic, including lockdowns and school closures.

The study highlights the potential negative impact of the COVID-19 pandemic on the cognitive abilities of secondary school students and suggests that these consequences should be taken into account when conducting intelligence assessments in the post-pandemic era. It also recommends that appropriate compensatory measures be implemented to address any learning loss or cognitive deficits that may have resulted from the disruption of regular schooling during the pandemic.

Article: Students’ intelligence test results after six and sixteen months of irregular schooling due to the COVID-19 pandemic – PLOS One

News Release: After 6 months of disrupted schooling during COVID-19, German students scored substantially lower on intelligence tests than comparative earlier cohorts, with the gap persisting after 16 months – PLOS