Flynn Effect and Changes in Intelligence in Austria (2005–2018)
Author Information
Author(s): Andrzejewski Denise, Oberleiter Sandra, Vetter Marco, Pietschnig Jakob
Primary Institution: University of Vienna
Hypothesis
The study investigates whether the observed stagnation and reversals in the Flynn effect are related to a decreasing strength of the positive manifold of intelligence.
Conclusion
The study found a positive Flynn effect in IQ scores but a decreasing strength of the positive manifold of intelligence among Austrian residents from 2005 to 2018.
Supporting Evidence
- The study provides direct evidence for generational IQ test score changes based on standardization data.
- Positive Flynn effects were observed across all domains of the IQ test.
- Changes in the positive manifold strength were analyzed using R-squared values.
- Findings suggest a trend toward increasing ability differentiation in the general population.
Takeaway
The study shows that while people in Austria are scoring higher on IQ tests, the way different types of intelligence are connected is getting weaker.
Methodology
The study analyzed IQ test standardization data from 1392 Austrian residents across three cohorts (2005, 2011, 2018) to assess changes in IQ scores and the positive manifold.
Limitations
The 2005 cohort data were collected over a seven-year period, which may introduce noise, and the results may not be generalizable beyond Austria.
Participant Demographics
Participants were aged 14 to 85, with a balanced representation of men and women.
Statistical Information
Confidence Interval
[.894; .922]
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website