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Answer Upon - The Effects Of Genetic And Environmental Factors On IQ
When people like John Nelson Darby, an ex-Anglican priest in the nineteenth century, and others predicted that Jewry would be restored to the country of Israel (see e.g. Ezek. chs. 36-39), skeptics laughed. Today Israel and the surrounding nations are generally considered the powder barrel of not only the Middle East, but of the entire world! Is anyone heeding the wisdom of these bible expositors of almost twohundred
Genetic factors
Besides environmental influences, most scientists today believe that genes also play a part in determining one's IQ. However, there is currently an intense debate whether genetic or environmental factors are the deciding influence.
To sum up, science has come a long way in under
Frankfurt airport departure lounge. Full of western tech executives, each with an open laptop. They're all from different companies, all travelling separately. But one particular subject is making them feel like they're old college buddies, and they're networking like a swarm of honeybees."So, you've just been to Bangalore, have you?""Is it everything it's cracked up to be?""Is there still room th
The majority of studies on intelligence have shown that environmental factors account for about 25% of the differences in people's IQ scores. The factors that have been of greatest interest to scholars include prenatal development, nutrition, birth order, home and family environment, and the effects of schooling.
Prenatal development
Scientists have discovered many factors during a woman's pregnancy that could affect a child's cognitive development. Among them are:
... the mother's health, including her nutrition and smoking and drinking habits during pregnancy, her age and the number of previous pregnancies, the interval since her last pregnancy, blood type and Rh incompatibility of mother and fetus, her history of X-ray exposure, and her red blood cell count, to list a few (Jensen; 169).
Nutrition
Despite researchers' initial belief that nutrition played a significant role in a child's cognitive development, so far, there has been no substantial evidence that differences in nutritional habits have a noticeable effect on IQ, unless a child has suffered severe and prolonged malnutrition in early childhood.
Birth order
Surprisingly, statistical data shows that birth order can somewhat affect IQ:
Each successive child born into a family has, on average, a slightly lower IQ, by about .7 IQ point, than the previous born child... A parallel effect is found on scholastic achievement as well (Jensen; 171).
Home and family environment
One of the factors that many people attribute an important role to in mental development and differences in IQ is home and family environment. The latter encompasses variables such as:
... neighborhood, the number of rooms in the home ... the number of magazines and books, the parents' educational and occupational level, family income, whether private music lessons and dance lessons are given to child, membership in established organizations, and travel experiences (Jensen; 173).
Schooling
In addition, scholars have also examined the effects of schooling on a child's IQ. They have discovered that differences in school quality have no detectable influence on a child's intelligence test scores. What proves to be of greater significance is regular school attendance, especially in elementary school.
Genetic factors
Besides environmental influences, most scientists today believe that genes also play a part in determining one's IQ. However, there is currently an intense debate whether genetic or environmental factors are the deciding influence.
To sum up, science has come a long way in unders
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Prenatal development
Scientists have discovered many factors during a woman's pregnancy that could affect a child's cognitive development. Among them are:
... the mother's health, including her nutrition and smoking and drinking habits during pregnancy, her age and the number of previous pregnancies, the interval since her last pregnancy, blood type and Rh incompatibility of mother and fetus, her history of X-ray exposure, and her red blood cell count, to list a few (Jensen; 169).
Nutrition
Despite researchers' initial belief that nutrition played a significant role in a child's cognitive development, so far, there has been no substantial evidence that differences in nutritional habits have a noticeable effect on IQ, unless a child has suffered severe and prolonged malnutrition in early childhood.
Birth order
Surprisingly, statistical data shows that birth order can somewhat affect IQ:
Each successive child born into a family has, on average, a slightly lower IQ, by about .7 IQ point, than the previous born child... A parallel effect is found on scholastic achievement as well (Jensen; 171).
Home and family environment
One of the factors that many people attribute an important role to in mental development and differences in IQ is home and family environment. The latter encompasses variables such as:
... neighborhood, the number of rooms in the home ... the number of magazines and books, the parents' educational and occupational level, family income, whether private music lessons and dance lessons are given to child, membership in established organizations, and travel experiences (Jensen; 173).
Schooling
In addition, scholars have also examined the effects of schooling on a child's IQ. They have discovered that differences in school quality have no detectable influence on a child's intelligence test scores. What proves to be of greater significance is regular school attendance, especially in elementary school.
Genetic factors
Besides environmental influences, most scientists today believe that genes also play a part in determining one's IQ. However, there is currently an intense debate whether genetic or environmental factors are the deciding influence.
To sum up, science has come a long way in under
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Birth order
Surprisingly, statistical data shows that birth order can somewhat affect IQ:
Each successive child born into a family has, on average, a slightly lower IQ, by about .7 IQ point, than the previous born child... A parallel effect is found on scholastic achievement as well (Jensen; 171).
Home and family environment
One of the factors that many people attribute an important role to in mental development and differences in IQ is home and family environment. The latter encompasses variables such as:
... neighborhood, the number of rooms in the home ... the number of magazines and books, the parents' educational and occupational level, family income, whether private music lessons and dance lessons are given to child, membership in established organizations, and travel experiences (Jensen; 173).
Schooling
In addition, scholars have also examined the effects of schooling on a child's IQ. They have discovered that differences in school quality have no detectable influence on a child's intelligence test scores. What proves to be of greater significance is regular school attendance, especially in elementary school.
Genetic factors
Besides environmental influences, most scientists today believe that genes also play a part in determining one's IQ. However, there is currently an intense debate whether genetic or environmental factors are the deciding influence.
To sum up, science has come a long way in under
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Home and family environment
One of the factors that many people attribute an important role to in mental development and differences in IQ is home and family environment. The latter encompasses variables such as:
... neighborhood, the number of rooms in the home ... the number of magazines and books, the parents' educational and occupational level, family income, whether private music lessons and dance lessons are given to child, membership in established organizations, and travel experiences (Jensen; 173).
Schooling
In addition, scholars have also examined the effects of schooling on a child's IQ. They have discovered that differences in school quality have no detectable influence on a child's intelligence test scores. What proves to be of greater significance is regular school attendance, especially in elementary school.
Genetic factors
Besides environmental influences, most scientists today believe that genes also play a part in determining one's IQ. However, there is currently an intense debate whether genetic or environmental factors are the deciding influence.
To sum up, science has come a long way in under
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Genetic factors
Besides environmental influences, most scientists today believe that genes also play a part in determining one's IQ. However, there is currently an intense debate whether genetic or environmental factors are the deciding influence.
To sum up, science has come a long way in understanding the different factors that shape one's intelligence. However, there are still contentious issues that need to be clarified.
References:
Jensen, Arthur R. Straight Talk About Mental Tests. New York: The Free Press, 1981. 168-190.
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