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07-SEPTEMBER-2008 03:17:44 - Hunter vs. farmer theory or section by expanding it. Further information might be found on the talk page or at requests for expansion. May 2008 The hunter vs. farmer theory is a hypothesis proposed by Thom Hartmann about the origins of attention-deficit hyperactivity disorder ADHD and adult attention-deficit disorder AADD, that these conditions may be a result of a form of adaptive behavior. Hartmann notes that most or all humans were nomadic hunter gatherers for many thousands of years, but that this standard gradually changed as agriculture developed in most societies, and more people worldwide became farmers. Over many years, most humans adapted to farming cultures, but people with ADD/ADHD retained some of the older hunter characteristics. A key component of the theory is that the proposed hyperfocus aspect of ADD/ADHD is a gift or benefit. It is argued that in the hunter-gatherer cultures that preceded farming societies, hunters presumably mostly men needed hyperfocus more than gatherers presumably mostly women. Hartmann speculates that this gender difference is reflected in the fact that ADHD is diagnosed in over twice as many boys as girls. Hartmann developed the hunter vs. farmer hypothesis as a way to see ADD/ADHD as a set of behaviors, tendencies and skills with benefits and disadvantage, rather than simply as a defect or disorder. Contents 1 Science and the hunter vs. farmer theory 2 Criticism 3 See also 4 References 5 External links 6 further reading Science and the hunter vs. farmer theory This hunter theory is an interpretation of the origins of ADHD. One common generalization is that ADHD is a co-occurrence of several genetic variants. Harpending and Cochran offer a three-phase view of history that includes hunter-gathering, female farming, and then intensive agriculture; they suggest the hypothesis that ADHD increased reproductive fitness in the second phase.1 An important view, with considerable genetic backing, is that some of these genetic variants may have value in certain kinds of social groups, such as those that have migrated.23 Genetic variants conferring susceptibility to ADD are very frequent - implying that the trait had provided selective advantage in the past. 4 According to evolutionary anthropologist Ben Campbell of the University of Wisconsin, studies of the Ariaal, an isolated nomadic group in Kenya, suggest that impulsivity -- a key trait of ADD/ADHD -- has distinct advantages to nomadic peoples.5 Criticism Some criticism of the Hunter vs. Farmer theory revolves around the mismatch between the behaviours associated with ADHD, and those described as being adaptive for hunters, which might more accurately fit hypomania than ADD/ADHD.6 As a theory of evolutionary psychology it is also open to the core criticisms of that discipline. Hartmann, the originator of the theory, has stated that the hunter vs. farmer idea was intended as a mental model after his own son was diagnosed with ADHD, stating, It's not hard science, and was never intended to be, while acknowledging that some researchers are now using the hunter vs. farmer idea as a working hypothesis about the origin of ADD/ADHD.7 See also Neurodiversity Controversy about ADHD Attention-deficit hyperactivity disorder ADD or ADHD Adult attention-deficit disorder AADD Hyperfocus References ^ Harpending and Cochran. PNAS, Jan 8 2002 ^ Chang et al 1996 Human Genetics 98 ^ Grady et al 2003 Molecular Psychiatry 8 ^ Arcos-Burgos and Acosta Tuning major gene variants conditioning human behavior: the anachronism of ADHD ^ http://www.newscientist.com/article/dn14100-did-hyperactivity-evolve-as-a-survival-aid-for-nomads.html Callaway, Ewan. 2008. Did hyperactivity evolve as a survival aid for nomads? URL accessed 2008-06-13 ^ Mota-Castillo, M. 2005. Review of The Edison Gene: ADHD and the Gift of the Hunter Child. Psychiatric Services, 56, 500. ^ Hartmann, Thom 1995. ADD Success Stories. Grass Valley, California: Underwood Books, xvii. ISBN 1-887424-04-0. Hartmann, Thom, Attention Deficit Disorder: A New Perspective External links National Mental Health association, AADD webspage Adult Attention Deficit Disorder website with links Helpguide: ADHD or ADD: Signs, Symptoms, and Subtypes further reading Hartmann,Thom Attention Deficit Disorder, A Different Perception subtitled A Hunter in a Farmers World. Retrieved from http://en..org/wiki/Hunter_vs._farmer_theory Categories: Attention disordersHidden categories: Articles to be expanded since May 2008 | All articles to be expanded Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page This page was last modified on 24 August 2008, at 01:32
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