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Q: genetic versus envirenmental influences in Intelligence inheritance ( Answered,   1 Comment )
Question  
Subject: genetic versus envirenmental influences in Intelligence inheritance
Category: Science > Biology
Asked by: molwick-ga
List Price: $50.00
Posted: 30 Apr 2002 16:26 PDT
Expires: 30 May 2002 16:26 PDT
Question ID: 8047
I would like to know where can I find the data to make a statistical
analysis about the inheritance of Inteligence. As I already have a
model, I need the measurement of IQ of both parents and all of their
children, the families does not need to be identified with names but,
obviously, children must me asociated with their parents.

It will not be admisible to accept as IQ values any indirect
measurements like education levels because the model specificaly
asumes the opposite. Any typical test of intelligence would be
perfect.(Cattel, Weshler...)

As I have been trying to get these data, I can tell that sometimes one
follow links, but at the end the data it is not available or it will
take months or years to find it between lots of other kind of data.
What I want is the data that should exist in certain studies that
seems to exist. I mean the way should be to find where certain authors
substanciate their conclusions regarding the subject genetic versus
envirenmental cause in inheritance of intelligence. I suppose they
must have used real IQ values to talk about the subject because if the
have use dummy variables the conclusions are a bit dummy.

Thank you
Jose
Answer  
Subject: Re: genetic versus envirenmental influences in Intelligence inheritance
Answered By: mit-ga on 30 Apr 2002 20:30 PDT
 
Greetings, Molwick,

After some extensive Googling, I was able to find a 28 year study of
65 children (94 originally) and their parents that was conducted by
Virginia C. Crandall called "Young Adulthood Study, 1939-1967 (A539)".
The data are available through the archive of the Henry A. Murray
Research Center of Radcliffe College, Cambridge, Massachusetts
[Producer and Distributor].

The following standardized instruments were used for the children
(ages follow each test)
-Gesell Developmental Schedule scores from 6,12,18 & 24 months of age.
-Stanford-Binet given semi-annually from ages 2 « to 5, and annually
thereafter until age 10.
-Wechsler-Bellevue given at age 13. 
-Primary Mental Abilities Test (PMA) given at age 17 or 18. 

In addition, the IQ, educational and occupational level of each parent
was measured/tested.

[ http://www.radcliffe.edu/murray/data/ds/doc0539.htm ]

Application for use of data:
[ http://www.radcliffe.edu/murray/data/applicat.htm ]
Please complete a 1-2 page description of your proposed research
project and return it with your application materials to:

The Henry A. Murray Research Center
Radcliffe Institute for Advanced Study
Ten Garden Street
Cambridge, MA 02138.
Fax: (617) 496-3993


***Other studies or resources****

The Minnesota Twin Family Registry has some data regarding sets of
twins:
[ http://www.psych.umn.edu/psylabs/mtfs/mtrf3.htm ]

From the Psychological Review:
"Heritability Estimates Versus Large Environmental Effects: The IQ
Paradox Resolved" by William T. Dickens of the Brookings Institution,
and James R. Flynn
from the University of Otago:
[ http://www.apa.org/journals/rev/rev1082346.html ]

Cambridge University Professor Mackintosh explores "Heredity Pardigm"
in this Spring 2002 document (with supporting data):
[ http://www.psychol.cam.ac.uk/pages/teaching/NST%20II%20Professor%20Mackintosh%20IQ/IQ%20Lecture%201%202002.doc
]

***Google search***
://www.google.com/search?num=20&hl=en&safe=off&q=IQ+mother%27s+father%27s++child+intelligence+data
Hope this helps your research.

Request for Answer Clarification by molwick-ga on 01 May 2002 04:25 PDT
Hi mit-ga,

Thank you for your answer, I would like to find, if possible, some
links to the data I am looking for, but more direct links to the data.

Your first proposal is good enough if I can manage to obtain the data
but it is not clear becuase I need to ask permission...

I will accept the payment, but I would like some more help to get
closer to the data of lots of articles and books that they claim they
have done correlations
an analysis of the inheritance of the intelligence.

Regarding the "The Minnesota Twin Family Registry", I have been in
contact with them before and they do not have the data (I did say in
my question about following links that at the end they do not contain
the data).

Regarding the article "Heritability Estimates Versus Large
Environmental Effects: The IQ Paradox Resolved" by William T. Dickens
of the Brookings Institution, and James R. Flynn, it does not contain
any data at all because it is a theoretical model. I have also been in
contact with the authors.

In relation with the "Cambridge University Professor Mackintosh
explores "Heredity Pardigm", I have followed the link and I have not
seen any data of children or parents at all. Only the resuls of some
correlations but not the data source that I really doubt always exist.


Regards
Molwick

Clarification of Answer by mit-ga on 01 May 2002 23:36 PDT
Hi Molwick,

I have, again, been unsucessful in finding you the raw data that you
desire, but I have found some additional resources, books, and
lectures that may be helpful:

The Diverse Profile of the Extremely Gifted Child 
Author: Carolyn McGuffog, Candice Feiring, Michael Lewis 
Source: Roeper Review, Vol 10, No. 2, 1987 
[ http://www.ditd.org/floater.php?location=140 ]

Google Groups Discussion, some correlation data
[ http://groups.google.com/groups?q=%22nature+vs.+nurture%22+IQ+data+table&hl=en&safe=off&selm=1992Dec8.033010.28264%40news2.cis.umn.edu&rnum=1
]

[ http://groups.google.com/groups?q=IQ+data+table+child%27s+parent%27s+genetic&hl=en&safe=off&selm=1bklpsg6sqeij212atqtr10p485ia7uoeg%404ax.com&rnum=1
]

[ http://groups.google.com/groups?q=hereditary+intelligence+%22raw+data%22+children&hl=en&safe=off&selm=970528130243_-1364558814%40emout15.mail.aol.com&rnum=1
]

Bouchard is quoted quite extensively:
Bouchard, T. J., Jr. (1993). The genetic architecture of human
intelligence. In P. A. Vernon (Ed.), Biological approaches to the
study of human intelligence (pp. 33-93). Norwood, NJ: Ablex.

Bouchard, T. J., Jr., Lykken, D. T., McGue, M., Segal, N. L., &
Tellegen, A. (1990). Sources of human psychological differences: The
Minnesota study of twins reared apart. Science, 250, 223-228.

Yale Medical School Study (no raw data)
[ http://www.med.yale.edu/chldstdy/plomdevelop/genetics/99maygen.htm ]

Newsweeks review of Judith Harris' book ''The Nurture Assumption.'' 
[ http://www.washingtonpost.com/wp-srv/newsweek/parent090798a.htm ]
[ http://www.amazon.com/exec/obidos/ASIN/0684857073/qid=1020318882/sr=8-1/ref=sr_8_83_1/002-3619827-5698455
   ]

Another widely quoted book: RJ Sternberg's Handbook of Intelligence
[ http://www.amazon.com/exec/obidos/ASIN/0521596483/qid=1020320314/sr=1-5/ref=sr_1_5/002-3619827-5698455
]

A lecture by Prof. Kenneth McGraw from the Univ. Mississippi (some
data)
[ http://www.olemiss.edu/courses/psy529/Lectures/Beh.Genetics2/Lecture5a.htm
]
[ http://www.olemiss.edu/courses/psy529/Lectures/Beh.Genetics3/behgen3.htm
]
[ http://www.olemiss.edu/courses/psy529/Lectures/Beh.Genetics1/BehGen1.htm
]

Cernovsky, Z. Z. (1997) 
A critical look at intelligence research, 
In Fox, D. & Prilleltensky, I. (Eds.) Critical Psychology, London:
Sage, ps 121-133.
[ http://www.psy.dmu.ac.uk/brown/dmulib/INTEL2.htm ]

mit
Comments  
Subject: Re: genetic versus envirenmental influences in Intelligence inheritance
From: mit-ga on 01 May 2002 09:19 PDT
 
Hi Molwick,

I will continue to pursue the raw data that you desire. Many
researchers invest months in these studies, and while they publish
their summarized findings, they don't always publish the raw data. I
believe that the Murray Research Center will be a good start, but I'll
continue to look.

I will also find some direct references, citations, and so forth, for
these types of studies and post them here.

Thank you for your patience.

mit

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