IQ & Intelligence Research
Peer-reviewed publications on cognitive ability, IQ measurement, and intelligence science.
Research Papers
Early Exposure to Anesthesia and Learning Disabilities in a Population-based Birth Cohort
EXPOSURE to alcohol and some anesthetic and sedative drugs cause histopathologic changes in the developing brains of animals.1–3Implicated drugs include N -methyl-d-aspartate glutamate receptor a...
Not All Executive Functions Are Related to Intelligence
Accumulating evidence suggests that executive functions (EFs) are related to intelligence, despite neuropsychological results initially considered evidence of no such relation. However, findings th...
Contemporary intellectual assessment: theories, tests, and issues
Part I: The Origins of Intellectual Assessment. Wasserman, A History of Intelligence Assessment: The Unfinished Tapestry. Kamphaus, Winsor, Rowe, Kim, A History of Intelligence Test Interpretation....
Outcomes in Young Adulthood for Very-Low-Birth-Weight Infants
BACKGROUND: Very-low-birth-weight infants (those weighing less than 1500 g) born during the initial years of neonatal intensive care have now reached young adulthood. METHODS: We compared a cohort ...
The Musicality of Non-Musicians: An Index for Assessing Musical Sophistication in the General Population
Musical skills and expertise vary greatly in Western societies. Individuals can differ in their repertoire of musical behaviours as well as in the level of skill they display for any single musical...
Effects of Aerobic Exercise on Mild Cognitive Impairment
OBJECTIVES: To examine the effects of aerobic exercise on cognition and other biomarkers associated with Alzheimer disease pathology for older adults with mild cognitive impairment, and assess the ...
Competence in the context of adversity: Pathways to resilience and maladaptation fromchildhood to late adolescence
Competent outcomes in late adolescence were examined in relation to adversity over time, antecedent competence and psychosocial resources, in order to investigate the phenomenon of resilience. An u...
Efficiency of Functional Brain Networks and Intellectual Performance
Our brain is a complex network in which information is continuously processed and transported between spatially distributed but functionally linked regions. Recent studies have shown that the funct...
Cognitive load theory, educational research, and instructional design: some food for thought
Cognitive load is a theoretical notion with an increasingly central role in the educational research literature. The basic idea of cognitive load theory is that cognitive capacity in working memory...
The Multiple Sclerosis Impact Scale (MSIS-29): A new patient-based outcome measure
Changes in health policy have underlined the importance of evidence-based clinical practice and rigorous evaluation of patient-based outcomes. As patient-based outcome measurement is particularly i...
Water Manganese Exposure and Children’s Intellectual Function in Araihazar, Bangladesh
Exposure to manganese via inhalation has long been known to elicit neurotoxicity in adults, but little is known about possible consequences of exposure via drinking water. In this study, we report ...
Premature mortality in autism spectrum disorder
Background Mortality has been suggested to be increased in autism spectrum disorder (ASD). Aims To examine both all-cause and cause-specific mortality in ASD, as well as investigate moderating role...
Working memory, attention control, and the n-back task: A question of construct validity.
The N-back task requires participants to decide whether each stimulus in a sequence matches the one that appeared n items ago. Although N-back has become a standard "executive" working memory (WM) ...
Green spaces and cognitive development in primary schoolchildren
Exposure to green space has been associated with better physical and mental health. Although this exposure could also influence cognitive development in children, available epidemiological evidence...
The Digital Divide Among Low-Income Homebound Older Adults: Internet Use Patterns, eHealth Literacy, and Attitudes Toward Computer/Internet Use
BACKGROUND: Internet technology can provide a diverse array of online resources for low-income disabled and homebound older adults to manage their health and mental health problems and maintain soc...
Brain age predicts mortality
Age-associated disease and disability are placing a growing burden on society. However, ageing does not affect people uniformly. Hence, markers of the underlying biological ageing process are neede...
Timing of onset of cognitive decline: results from Whitehall II prospective cohort study
OBJECTIVES: To estimate 10 year decline in cognitive function from longitudinal data in a middle aged cohort and to examine whether age cohorts can be compared with cross sectional data to infer th...
The Influence of Physical Fitness and Exercise upon Cognitive Functioning: A Meta-Analysis
Nearly 200 studies have examined the impact that either acute or long-term exercise has upon cognition. Subsets of these studies have been reviewed using the traditional narrative method, and the c...
Measuring Risk Literacy: The Berlin Numeracy Test
Abstract We introduce the Berlin Numeracy Test, a new psychometrically sound instrument that quickly assesses statistical numeracy and risk literacy. We present 21 studies ( n =5336) showing robust...
Investing in Preschool Programs
We summarize the available evidence on the extent to which expenditures on early childhood education programs constitute worthy social investments in the human capital of children. We provide an ov...