PERBEDAAN INTELLIGENCE QUOTIENT (IQ) SISWA-SISWI SEKOLAH DASAR USIA 11 – 12 TAHUN DI DAERAH ENDEMIS RINGAN DAN ENDEMIS BERAT GOITER DI KECAMATAN ARJASA KABUPATEN JEMBER

Abstract

Intelligence is a common term which is used to explain the intellectual ability of each person. Intelligence is symbolized by Intelligence Quotient (IQ). IQ is an expression of individual ability level in a particular time related with age norm of the person himself which is related with intellectuality and it is measured by an IQ test. IQ level is represent the individual intellectual ability level according to their age. IQ level is influenced by some factors, one of them is Goitre. Goitre is one of a kind of Iodine Deficiency Disorders (IDD) which is represent with thyroid gland hyperthrophy. Iodium deficiency especially in children with elementary school age can decrease the amount of thyroid hormone in body blood, so it can increase the production of Thyroid Stimulating Hormone (TSH) and Thyroglobulin, and make thyroid gland become hyperthrophy. Iodium deficiency can hamper brain morphology and cognitive development, and at least it can influence the IQ point. The purpose of this research is to know the difference of Intelligence Quotient (IQ) of elementary school children 11 – 12 years old in the mild endemic and hard endemic goitre area in Arjasa Distric Jember Regency. The design of this research was observational analytical with cross sectional research approach method. The data was collected using IQ test instruments, called Culture Fair Intelligence Test (CFIT). Sample of this research was collected using Purposive Sampling technique with the amount of the sample were 125 students. Based on the calculation of statistical Independent T-Test, the p value was 0,000. Based on this result, by looking at the significancy value, the p value was less than the α value (p < α), which is α value is 0,05. Based on this result, the conclude was H0 was rejected, which means that there was a difference of Intelligence Quotient (IQ) of elementary school children 11 – 12 years old in the mild endemic and hard endemic goitre area in Arjasa Distric Jember Regency.