# Intelligence Test Scores Are Declining in Norway Decline is more pronounced among children from higher-income families. - **Source:** [Reddit Science](https://brifing.si/source/1294ffb3-9f44-431d-8cd2-05584c8d9014) - **Published:** 2026-07-13 - **Topic:** [People & Culture](https://brifing.si/c/people) - **Original article:** - **On Brifing:** https://brifing.si/s/2c0e8961-bb8e-4025-9b2b-569f46b4ba6f ## Decline in Intelligence Test Scores A study in Norway revealed that intelligence test scores are declining. The decline is more pronounced among children from higher-income families. The research analyzed data from 579,379 Norwegian men. ## Impact of Income and Education Scores dropped faster among sons of high-income fathers. The expansion of upper-secondary education temporarily slowed the decline in lower-income groups. However, this effect did not last in the long term. ## Scope of the Research The study examined intelligence test scores of Norwegian men over the years. The data revealed a decline in scores, particularly among higher-income families. The trend became more pronounced over time. ## Education Policies The expansion of upper-secondary education temporarily slowed the decline in scores among lower-income groups. However, this policy did not prevent the long-term decline. The impact of education policies was limited. ## Socioeconomic Factors The research highlighted the impact of socioeconomic factors on intelligence test scores. The faster decline among children from higher-income families underscores the importance of these factors. Income and education level are key determinants. ## Conclusion and Importance The decline in intelligence test scores in Norway highlights the influence of education and income factors. These findings suggest a need to review education policies. The decline raises concerns for future generations. ## Sources covering this story - https://www.reddit.com/r/science/comments/1uvplnz/intelligence_test_scores_are_dropping_especially/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._