Tuesday, July 17, 2012

I'm 95% Confident This is a Good Definition of a P Value

by Chris Masterjohn

New post over at Mother Nature Obeyed:


In this post, I explain why I consider it legitimate to read "confidence" that something is not due to chance into a P value. I discuss the differences between Bayesian and frequentist approaches, the agreement between P values derived from a significance test of the null hypothesis and those derived from the construction of a 95% confidence interval, and I use examples that include funny-looking red imps that like to steal things and lie about it.

Enjoy!

Read more about the author, Chris Masterjohn, PhD, here.

Monday, July 16, 2012

Last Day to Get the Event-Week Price for the Real Food Summit Take-Home Package

by Chris Masterjohn

Today is the last day to order the Real Food Summit take-home package for $67. Sean's raising the price to $99 tomorrow. For the sake of full disclosure, if you use the link below to purchase the package, I get a cut. On the other hand, you save $22. For those who missed my talk and can't afford the take-home package, or for those who enjoyed it and would like some elaborations, I'll be doing a few blog posts over at Mother Nature Obeyed soon to expand on my analysis of Price's work.  Anyways, here's the link:


Enjoy!

Read more about the author, Chris Masterjohn, PhD, here.

Wednesday, July 11, 2012

RFS: Live Call-In Q&A Tonight, Weston Price on Primitive Wisdom

by Chris Masterjohn

Sean Croxton is now broadcasting part two of my talk on Weston Price and primitive wisdom, free today only, as part of the Real Food Summit. Yesterday, I talked about Price's scientific approach. Today, I talk about his conclusions: that some, but not all, "primitive" groups had successively accumulated the wisdom needed to thrive, the relation between this wisdom and "real food," and how to integrate this approach within a broad range of other data. If you have any questions about either yesterday's or today's talk, you can call in for a live Q&A tonight at 5 PM Pacific and 8 PM Eastern. You can listen here and can call in by dialing (347) 237-5608. 

If you want to download all 27 talks, over 300 pages of transcripts, seven bonus talks, and eight other bonuses, including e-books, coupons, subscriptions, videos, and all that, Sean lowered the event-week price from $79 to $67. When the event is over, the price will go up to $99.  You can purchase the event or simply listen for free here:

Real Food Summit 

Read more about the author, Chris Masterjohn, PhD, here.

Tuesday, July 10, 2012

RFS: The Scientific Approach of Weston Price -- Free Today, Low Price Tomorrow

by Chris Masterjohn

Part 1 of my talk titled "Weston Price on Primitive Wisdom" is airing today on Sean Croxton's Real Food Summit. The Caltons and Aaron Lucich are also airing today. My talk today covers the scientific approach of Weston Price: his scientific background, the strengths and limitations of his approach to studying "primitive" groups, why this approach provides a stronger inference of cause and effect than other observational approaches, what its strengths and limitations are, and how it compares and contrasts with the approach to studying hunter gatherers popular in the paleo movement. I also discuss an oft-overlooked "evolutionary" approach that Price retrospectively philosophized onto his work in the 1945 edition of his book, and conclude that Price correctly identified an important point about complying with the laws of nature but probably misidentified the source of our ignorance of these laws by invoking our failure to take into account common ancestry with animals, when in fact some groups he studied complied very well with these laws without even acknowledging common ancestry with the white man.

The talk is free today. Tomorrow, the second part of my talk will cover Price's theory of primitive wisdom, its relation to the Real Food movement, and how to incorporate it into a broader view that includes other types of evidence. Tomorrow evening at 5 PM Pacific Time and 8 PM Eastern Time, I'll be available for live Q&A, so feel free to call in!

If you want to download all 27 talks, their transcripts, bonus talks, and obtain a boatload of other bonuses, Sean decided to drop the event-week price from $79 to $67. Once the event is over, the price will go up to $99. 

Enjoy!

Real Food Summit

Read more about the author, Chris Masterjohn, PhD, here. 

Sunday, July 1, 2012

I'll Be On Sean Croxton's Real Food Summit -- Free Registration Now Open!

by Chris Masterjohn

I recorded a two-part talk on Weston Price's scientific approach and nutritional perspective that will be broadcast as part of Sean Croxton's Real Food Summit next week on July 9 and 10. I'll also be making a live appearance on July 10 for call-in Q&A about my talks. 

In the first part, I describe Price's extremely impressive scientific background and explain his scientific approach. I argue that there are unique aspects to his observations of "primitive" peoples during the nutritional transition to modern foods that make this approach the closest thing possible to a randomized controlled trial found in a natural context, though I note important differences between the approaches and potential limitations of each. I conclude by comparing and contrasting Price's approach to studying ancestral populations to the approach more popular in the "Paleo" movement where modern hunter-gatherers are seen as a window into our evolutionary past. I discuss whether Price's perspective was "evolutionary," and I offer a critical analysis of an oft-overlooked "evolutionary" perspective that Price had retrospectively philosophized into his work in the extra chapters of the 1945 edition of Nutrition and Physical Degeneration that are included in the modern printed editions but aren't included in the online version.

In the second part, I discuss Price's conclusions: his theory of "primitive wisdom" and it's relation to the "real food" concept.  I conclude with an attempt to outline how we should integrate Price's findings with other levels and types of evidence.

As of a couple hours ago, free registration is now open.  The first 500 registrants get a free one-year subscription to Organic Gardening magazine.  The talks will only be up for one day each, but you can also cough up $79 now or $99 later to get recordings and transcripts of all the talks with a boatload of other stuff like seven bonus presentations, that subscription to Organic Gardening you might have missed if you weren't one of the first 500 registrants to the freebie option, a handful of digital books and reports, a cooking video tutorial, and some coupons for cool stuff.  In the interest of full disclosure, I get a hefty commission if you use my link and wind up opting to pay for the deluxe package. But if you just want to listen to the talks each day, registration is free:


Enjoy!

Read more about the author, Chris Masterjohn, PhD, here.