OBJECTIVES Examine the relationships between blood lead concentrations and children's intelligence quotient (IQ) and school performance. PARTICIPANTS AND METHODS Participants were 1341 children (738 boys and 603 girls) from Jintan, China. Blood lead concentrations were measured when children were 3-5 years old. IQ was assessed using the Chinese version and norms of the Wechsler Preschool and ...

The genetic and environmental relationships among measures of phoneme awareness, naming speed, Intelligence Quotient (IQ), and reading performance were investigated in 623 identical and fraternal twin pairs tested in the Colorado Learning Disabilities Research Center. A Cholesky decomposition analysis of these measures provided evidence supporting the double deficit hypothesis that difficulties...

The threshold hypothesis is a classical and notable explanation for the relationship between creativity and intelligence. However, few empirical examinations of this theory exist, and the results are inconsistent. To test this hypothesis, this study investigated the relationship between divergent thinking (DT) and intelligence with a sample of 568 Chinese children aged between 11 and 13 years o...

Association between common intelligence quotient (IQ) and S and L alleles of functional 5HTTLPR polymorphism causing respectively low and high expression of human serotonin transporter coding gene was studied in young (19-35 years, 50 men and 76 women) and older (>55 years, 39 men and 43 women) Caucasian subjects. They were students, scientists, technicians and administrative staff of Novosibir...

OBJECTIVE To compare the intelligence quotient (IQ) of patients with thalassemia major (TM) to that of normal children. METHODS We conducted the study in April and May 2002 on 294 homozygote beta-thalassemia patients, (157 male and 137 female, mean age of 13.2 years; range, 9-18 years). These 294 patients were randomly selected from the 984 TM patients who routinely refer to Shiraz Cooley's M...

OBJECTIVE To find the frequency of regular breakfast consumption among Pakistani teenagers while the other objective was to find out the association between breakfast consumers (BC) and intelligence quotient (IQ). METHODS This comparative cross sectional study was conducted on 102 students of a Public School Rawalpindi from August 2013 to January 2014. Participants were categorised into two g...

Intelligence Quotient (IQ) has monopolized intelligence theory. A person's is only measured through the results of tests, which are logical-mathematical, quantitative and linear. As a result, other aspects human neglected. The hegemony IQ theory inseparable from historical, scientific, cultural backgrounds. Historically, indeed first more than 200 years old, starting with Gall's Phrenology.

INTRODUCTION Children with cochlear implants (CIs) may experience few opportunities for positive musical experiences, and musical perception is therefore often not sufficiently developed. This paper investigates and discusses the relationship between intelligence quotient (IQ) and musical ability in children with CIs compared with children with normal hearing. MATERIALS AND METHODS This was a...

BACKGROUND Relational training protocols based on Relational Frame Theory (RFT) are showing promising results in increasing intelligence quotient. This case study aimed at analyzing the effect of a training protocol in fluency and flexibility in relational responding on intelligence quotient with a 4-year-old child. METHOD The child’s cognitive and psychomotor development was evaluated ...

Attention deficit hyperactivity disorder (ADHD) is associated with lower than average intelligence quotient (IQ) scores. However, research done on this disorder often excludes participants based on lower than average IQ's (i.e., between 70 and 85). The purpose of this paper is to alert researchers to the consequences of excluding participants based on IQ's within this range and to highlight the...