Studies show that the correlations of IQ scores for identical twins reared together and for identical twins reared apart are both strong (. 86 and . 76, respectively). … However, the score correlations for fraternal twins also suggests that
the environment in which they were raised is significant for IQ
.
What did the Minnesota Twin Study show quizlet?
What was the hypothesis of the Minnesota Twin Study? It
was expected that monozygotic twins raised together and apart would have a high concordance rate due to the inheritance of genes
. It was also expected that monozygotic twins would have a higher concordance rate than dizygotic twins. You just studied 15 terms!
What do twin studies suggest?
Twin studies are studies conducted on identical or fraternal twins. They aim to
reveal the importance of environmental and genetic influences for traits, phenotypes, and disorders
. Twin research is considered a key tool in behavioral genetics and in content fields, from biology to psychology.
What do twin studies tell us about the importance of genetics on intelligence quizlet?
Twin studies reveal that: the influence of genetics on IQ
is most visible at young ages
. genetic influences on IQ increase with age. correlations between twins’ IQ scores decrease with age for MZ (identical) twins and increase with age for DZ (fraternal) twins.
What are the problems with twin studies?
The most common objections to twin studies have been: (1)
Twins have almost always been reared to- gether
and this common rearing may have con- tributed to increased concordance in monozygotic (MZ) twins because of psychological characteris- tics unique to such pairs (8, 29);
Why are twin studies unethical?
The study, which has since been criticized for being unethical — for example, neither the children’s biological parents nor the adopting families were informed — was an attempt to get at the central psychological questions of “nature versus nurture” and the “twinning reaction.”
How do twin studies support the view that intelligence is inherited?
Genes
have a very strong influence over how certain parts of our brains develop
, scientists in the US and Finland have found. In identical twins, these areas showed a 95 to 100 per cent correlation between one twin and the other – they were essentially the same. …
What are 2 conclusions of Bouchard’s study?
The research team found that
identical twins who are reared apart had the same chance of being similar as twins
who were raised together. Bouchard and his colleagues concluded that genetic factors have a large influence on behavioral habits demonstrating the influence of the genetics on development.
Which of the following was the main result of the Minnesota study of twins reared apart?
Minnesota Study of Twins Reared Apart
He found that
an identical twin reared away from his or her co-twin seems to have about an equal chance of being similar to the
co-twin in terms of personality, interests, and attitudes as one who has been reared with his or her co-twin.
What do the results of twin studies suggest about intelligence group of answer choices?
Studies show that the correlations of IQ scores
for identical twins reared together
and for identical twins reared apart are both strong (. … However, the score correlations for fraternal twins also suggests that the environment in which they were raised is significant for IQ.
What do twin studies tell us about intelligence quizlet?
What do twin studies tell us about IQ? …
Finding that average IQ scores have been rising at a rate of approximately 3 points per decade
– Due to increased sophistication of IQ tests, increased complexity of the modern world, better nutrition, changes at home and school, etc.
Which represents one of the major reasons that intelligence is a difficult concept to define?
Which represents one of the major reasons that intelligence is a difficult concept to define?
It can only be measured by indirect means
. What was Binet and Simon’s 1905 intelligence scale originally designed to identify?
Why are studies of identical twins raised in different environments extremely valuable?
Why are studies of identical twins raised in different environments extremely valuable in understanding the causes of a disease? They are extremely valuable in understanding the causes of a disease, because it
differentiates
between nature vs. nurture.
Why are twin studies important?
We study twins to understand how much of the difference in a trait between people is caused by genes and how much is caused by the environment. These studies are important because they
help scientists quantify genetic and modifiable environmental factors that increase the risk of certain diseases
.
Which of the following is a limitation of twin studies?
Which of the following is a limitation of twin studies?
The samples are not representative
. (Twins lead a very different life than the average child growing up. Therefore, they are not highly representative.
Is it illegal to separate twins?
Twins are Never “Separated at Birth”
Keeping two (or more) siblings together is a choice made in the best interest of all involved, especially the children at the center of the adoption.
