在人口代表性德国学生样本 (2012-2022) 中测量不变流体的Anti-Flynn效应 (2012-2022)
Sandra Oberleiter1, Sabine Patzl2, Jonathan Fries1
1Department of Development and Educational Psychology, Faculty of Psychology, University of Vienna, 1010 Vienna, Austria.
Journal of Intelligence
|January 22, 2024
概括
几代人的智商分数正在下降,扭转了历史的弗林效应. 最近的德国学生在过去十年中,他们的图形推理能力显著下降.
科学领域:
- 心理学 心理学 心理学
- 认知科学 认知科学
- 教育心理学教育心理学
背景情况:
- 弗林效应在历史上记录了整个20世纪智商得分的上升.
- 最近的研究表明,这些智商得分趋势的潜在逆转或不一致.
- 现有研究通常依赖于广泛的智能类别 (流体与结晶).
研究的目的:
- 研究特定认知能力的跨时代变化,重点关注形象推理.
- 在德国中学学生的大型代表性样本中分析智商变化轨迹.
- 探索弗林效应模式最近不一致的潜在原因.
主要方法:
- 利用了三个德国中学学生 (N = 19,474) 的大规模,人口代表性样本.
- 采用测量不变的图形推理任务,以确保跨时间的一致评估.
- 分析了2012年至2022年期间收集的性能数据.
主要成果:
- 从2012年到2022年,学生的图形推理表现出现了持续且显著的下降.
- 量化每十年平均智商下降4.68至5.17个点.
- 效应大小 (科恩的d) 从0.34到0.38不等,表明小到中等的负面影响.
结论:
- 研究结果表明,在德国中学学生中,弗林效应的反转,特别是在图形推理中.
- 观察到的下降可能表明智力正元的减弱.
- 这些结果有助于理解最近关于不一致的智商变化轨迹的报告.
相关概念视频
Regression Toward the Mean
6.3K
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.3K
Behrens–Fisher Test
79
The Behrens-Fisher test is a statistical method designed to address the Behrens-Fisher problem, which arises when comparing the means of two normally distributed populations with unequal variances. Unlike the Student's t-test, which assumes equal variances, the Behrens-Fisher test allows for mean comparison without this restrictive assumption. This flexibility makes it particularly valuable in scenarios where two independent samples exhibit normality but lack variance homogeneity.
This test...
This test...
79
Typical Model Studies
359
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
359
Mechanistic Models: Compartment Models in Individual and Population Analysis
43
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
43


