Eric Busboom
March 16, 2012
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May 13, 2011
Testosterone and Cognitive Function
Finding one article on pre-natal exposure to testosterone and giftedness, I figured that this was probably only one paper showing a tentative connection. Then I found all of the other papers.
- Martin Mrazik, Stefan Dombrowski. The Neurobiological Foundations of Giftedness.
- University of Liverpool (2009, November 7). Hormone That Affects Finger Length Key To Social Behavior.
- BMJ Specialty Journals (2006, September 28). Finger Length Ratio May Predict Women’s Sporting Prowess.
- University of Bath (2007, May 24). Finger Length Helps Predict Elementary Exam Results
- Concordia University (2010, November 9). Alpha males take greater risks: Study links finger length to behavior
- University of Chicago (2009, August 25). Higher Level Of Testosterone In Women Linked To Choice Of Risky Careers.
- British Association For The Advancement Of Science (2007, September 13). Testosterone In Womb Linked To Autism.
- University of Cambridge (2011, February 10). Extra testosterone reduces your empathy, researchers find.
- University of Cambridge (2009, July 16). Asperger Syndrome, Autism, And Empathy: Study Links 27 Genes.
- Harvard University (2008, January 14). Testosterone May Improve Mental Function.
- Association for Psychological Science (2010, September 7). Having a male co-twin improves mental rotation performance in females.
No connection with Testosterone: http://tc.engr.wisc.edu/steuber/SophJrSr/papers/2008/HonorableLohrentz.pdf
Related to the co-twin study: JAMA and Archives Journals (2007, December 4). Males With A Female Twin May Be At Higher Risk For Anorexia Nervosa.
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December 1, 2010
Economic Notes On Manufacturing
The US has been shedding manufacturing jobs since about 2000. ( Not 1970 as many people believe . )
But, a capital spending report for the same period shows that capital spending has not dropped:
Furthermore, manufacturing revenue has been climbing over the period, but income after tax has stayed fairly flat.
So, if the manufacturing companies are spending less on people, the same amount on machines but not getting more income, where is the additional expense? They could be spending more on raw materials, but the other possibility is that they are spending more on services, in the form of outsourced labor. For instance, instead of hiring janitors directly, they hire a janitorial services firm. In this case, the same number of people are being hired, but the job is shifted from “manufacturing” to “services.” I’m not sure about the details of this effect, but it does mean that the decline in manufacturing jobs may not be as great as it appears.
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November 13, 2010
Positive commands
Here’s a good example of how to turn a negative into a positive. Much more poetic than ” keep out”.
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October 8, 2010
Kid Powered Teacup
This teacup in the children’s playground in Golden Gate Park accelerates when you sit in it.
I’m not sure how it works, but I suspect it has a screw, a ratchet and a spring to lift it up, but it doesn’t obviously screw downward under weight.
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Happy feet
Finally got my Sanuks.
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October 2, 2010
Testing Embedded Google Video
I’m testing embedded Google Video, from our new Google Apps account.
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April 3, 2010
Another attempt at casting
Getting the sand ready to cast an aluminum part for the kitchen.
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