Methodological Issues Associated with Studying the Flynn Effect: Exploratory and Confirmatory Efforts in the Past, Present, and Future

This essay, written by the guest editor, is an introduction to a special issue of the Journal of Intelligence devoted to methodological issues associated with the Flynn Effect. The essay evaluates past Flynn Effect research in terms of exploratory versus confirmatory efforts. Future research is also cast within this same framework. Finally, the four special issue papers are briefly reviewed, including comments on their own exploratory/confirmatory status.

[1]  John W. Tukey,et al.  Exploratory data analysis , 1977, Addison-Wesley series in behavioral science : quantitative methods.

[2]  M. Voracek,et al.  One Century of Global IQ Gains , 2015, Perspectives on psychological science : a journal of the Association for Psychological Science.

[3]  Grant Morgan,et al.  An Investigation of Growth Mixture Models for Studying the Flynn Effect , 2014 .

[4]  Michael A. Mingroni Future Efforts in Flynn Effect Research: Balancing Reductionism with Holism , 2014 .

[5]  J. Sundet The Flynn Effect in Families: Studies of Register Data on Norwegian Military Conscripts and Their Families , 2014 .

[6]  D. Boomsma,et al.  Can GE-Covariance Originating in Phenotype to Environment Transmission Account for the Flynn Effect? , 2014 .

[7]  J. Fletcher,et al.  The Flynn effect: a meta-analysis. , 2014, Psychological bulletin.

[8]  J. Nijenhuis,et al.  Controlling for increased guessing enhances the independence of the Flynn effect from g: The return of the Brand effect , 2014 .

[9]  J. Rodgers Are birth order effects on intelligence really Flynn Effects? Reinterpreting Belmont and Marolla 40 years later , 2014 .

[10]  S. D. Brown,et al.  Four successful tests of the Cognitive Differentiation-Integration Effort hypothesis , 2013 .

[11]  J. Nijenhuis,et al.  An item-level examination of the Flynn effect on the National Intelligence Test in Estonia , 2013 .

[12]  J. Nijenhuis,et al.  Were the Victorians cleverer than us? The decline in general intelligence estimated from a meta-analysis of the slowing of simple reaction time , 2013 .

[13]  J. Nijenhuis,et al.  Is the Flynn effect on g?: A meta-analysis , 2013 .

[14]  R. Lynn Who discovered the Flynn effect? A review of early studies of the secular increase of intelligence , 2013 .

[15]  M. Woodley A life history model of the Lynn-Flynn effect , 2012 .

[16]  M. Woodley Heterosis doesn't cause the Flynn effect: a critical examination of Mingroni (2007). , 2011, Psychological review.

[17]  Siew C. Ang,et al.  The Flynn Effect within Subgroups in the U.S.: Gender, Race, Income, Education, and Urbanization Differences in the NLSY-Children Data. , 2010, Intelligence.

[18]  J. Sundet,et al.  The Flynn effect in sibships: Investigating the role of age differences between siblings. , 2010 .

[19]  Steven J. Osterlind,et al.  Using Item Response Theory to assess the Flynn Effect in the National Longitudinal Study of Youth 79 Children and Young Adults data , 2008 .

[20]  J. Sundet,et al.  The Flynn effect is partly caused by changing fertility patterns , 2008 .

[21]  Michael A. Mingroni Resolving the IQ paradox: heterosis as a cause of the Flynn effect and other trends. , 2007, Psychological review.

[22]  J. Rodgers,et al.  Identification of a Flynn Effect in the NLSY: Moving from the center to the boundaries , 2007 .

[23]  S. Ceci,et al.  Age Differences within Secular IQ Trends: An Individual Growth Modeling Approach. , 2005 .

[24]  Jonathan Huebner,et al.  A possible declining trend for worldwide innovation , 2005 .

[25]  T. Teasdale,et al.  A long-term rise and recent decline in intelligence test performance: The Flynn Effect in reverse , 2005 .

[26]  D. Boomsma,et al.  Are intelligence tests measurement invariant over time? Investigating the nature of the Flynn effect , 2004 .

[27]  J. Sundet,et al.  The end of the Flynn effect?: A study of secular trends in mean intelligence test scores of Norwegian conscripts during half a century , 2004 .

[28]  J. Rodgers,et al.  Expanding Variance and the Case of Historical Changes in IQ Means: A Critique of Dickens and Flynn (2001) , 2002 .

[29]  J. Loehlin The IQ paradox: resolved? Still an open question. , 2002, Psychological review.

[30]  J. Rodgers,et al.  Expanding variance and the case of historical changes in IQ means: a critique of Dickens and Flynn (2001). , 2002, Psychological review.

[31]  J. Flynn,et al.  Heritability estimates versus large environmental effects: the IQ paradox resolved. , 2001, Psychological review.

[32]  Robert W. Howard,et al.  Preliminary Real-World Evidence That Average Human Intelligence Really is Rising , 1999 .

[33]  J. Rodgers A critique of the Flynn Effect: massive IQ gains, methodological artifacts, or both? , 1998 .

[34]  A. Jensen,et al.  The g factor , 1996, Nature.

[35]  C. Brand,et al.  The g Factor: General Intelligence and Its Implications , 1996 .

[36]  Richard Lynn,et al.  The role of nutrition in secular increases in intelligence , 1990 .

[37]  J. Flynn Massive IQ gains in 14 nations: What IQ tests really measure. , 1987 .

[38]  James R. Flynn,et al.  The mean IQ of Americans: Massive gains 1932 to 1978. , 1984 .

[39]  John W. Tukey,et al.  We Need Both Exploratory and Confirmatory , 1980 .

[40]  F. L. Girardeau What is intelligence? , 1969, Mental retardation.