Factors Related to Changes in Iq: A Follow‐up Study of Former Slow Learners*

Abstract

A group of 41 former slow learners were tested as children and at the age of 30 years. Information about family and personal problems met during childhood was available from the local school files and also by an interview at the age of 30 years. Changes in IQ were associated with the problem score and further education after leaving the compulsory school system. The group of subjects with the greater number of problems and further education improved their IQ scores by 18.1 points, against 5.0 points in the group with one or no problems and without further education.

Constancy and Change in the Growth of Human Characteristics*

“…There was selective sample wastage of the better subjects, hence estimates were conservative. Recent replications, but with much longer time intervals, have been reported by Svendsen (1982Svendsen ( , 1983, both on similar and rather brighter samples. Lewis (1954) studied 500 children with poor backgrounds, the worst in Kent, admitted to a reception centre, mostly over 5 years of age.…”

Borderline Intellectual Functioning: A Systematic Literature Review

“…Seltzer et al (2005) found no differences in the frequency of meeting friends and relatives between high school graduates with Table 3 Continued Study 2014, Vol. 52, No.…”

“…2 5 No. a Sample details from Svendsen, 1983. INTELLECTUAL AND DEVELOPMENTAL DISABILITIES 2014, Vol.…”

What is the Flynn Effect, and how does it change our understanding of IQ?

“…But ‘stability,’ Exeter University's Michael Howe points out, ‘does not imply unchangeability.’ And indeed, individual IQ scores are quite alterable if a person gets the right push. ‘IQ scores,’ explains Cornell University's Stephen Ceci, ‘can change quite dramatically as a result of changes in family environment, work environment, historical environment, styles of parenting, and most especially, shifts in level of schooling.’ A 2002 study by Skuy et al demonstrated that a child's performance on an IQ test such as Raven's Standard Progressive Matrices can be significantly improved through effective education . A comprehensive 2012 review of the research by Richard Nisbett et al concluded that ‘Group differences in IQ are best understood as environmental in origin’ and that improvements in education and economic circumstances can be clearly tied to improvements in measured intelligence …”