MadSci Network: Evolution
Query:

Re: is curiosity linked to genes?

Date: Fri Sep 3 12:07:14 1999
Posted By: Salvatore Cullari, Professor and Chair, Lebanon Valley College
Area of science: Evolution
ID: 935848953.Ev
Message:

Thank you for your interesting question.   A simple response is that “it 
depends on who you ask.”  Some psychologists believe that virtually all 
human behavior is due to the environment. These persons are often called 
radical behaviorists and are largely influenced by a psychologist by the 
name of B.F. Skinner. Other psychologists however believe that our behavior 
is largely determined by our genetic make-up. The true answer probably falls 
somewhere in between.  If we take your question a step further we 
inevientbly become entangled in the great nature/nurture debate. 

Studies on identical and fraternal twins have established that most traits 
and behaviors are partially influenced by genes.  This would also include 
what you call curiosity.  However, most if not all human behaviors are 
influenced by both nature and nurture.  For example, it appears that on the 
average, genetics account for half of the variance of most human traits.  In 
terms of your question, some psychologists believe that curiosity (depending 
on how you define it) may be one of our strongest and most important traits. 
Note that this means that the environment accounts for the rest of the 
variability of traits between individuals. 

Interestingly, researchers are finding that the balance between genetic and 
environmental influences on certain traits change as people age. They also 
find that genes not only influence behavior directly but may also influence 
the environment. In other words, our experiences may be influenced in part 
by our genetic propensities, and we may choose certain experiences because 
they fit best with our innate preferences.  So it is the interaction between 
nature and nurture that appears to be most important.

My own personal opinion is that the balance between genetic and 
environmental influences probably varies across individuals. In other words, 
genetics may play a stronger role in some persons, but a lessor one on the 
same trait  in other individuals (please note that I have no scientific 
support for this). So in short, the answer to your question is “yes”, 
genetics does have an influence on curiosity, but your environment probably 
determines how you use your curiosity.  

Since you appear to be a curious type, I listed some sites below where you 
can find out much more information about your topic.  
 http://psyche.uthct.edu
/nes/layinfo/nat-nurt.html

http://www.mentalhealth.co m/mag1/p5h-beh2.html

http://www.human-nature.c om/books/lightner.html

http://www.snc.edu/psych/k orshavn/natnur02.htm


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