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Thursday, 16 August 2007

Comments

Tracy Allison Altman

Matthew, Thanks for your insightful comments.

Matthew Sheldon

As a business consultant who uses the statistical techniques employed in this research, I have to say that this study is a complete joke. It almosts borders on academic fraud.

The results were based on a very weak sample and the data was collected in a phone survey, which just does not pass the credibility test right out of the gate.

Disney rightly pointed out that the study only focuses on a narrow age group, and is at best an anomalous statistical result and at worst simply shoddy research.

I have reviewed the regression formula and it fails to control for the amount of interaction a parent has with the child. This is such a horrendous methodological gap as to be unconscionable. It is quite possible that parents who do not spend time interacting with the child park them in front of the TV. This I can believe. But under such circumstances is it the video that limits language development or the lack of parental attention? The fact that this study cannot answer that question, yet claims to in the press release smacks of a desire to publish anything that will get picked up in the mainstream media. They then offer caveat after caveat once the bold claim in the headline is out there.

The result effectively claims that placing the child in front of a plain white wall with no stimulus is better for development than seeing a baby video. The very suggestion is, on its face, absurd. Yet we are asked to trust this on the basis of weak methodology and poor statistical control variables.

The researchers have thus far refused to post their data, which tells you something. My guess is they ran several hundred regressions and left out the right variables to sieze on a statistical anomaly to get a cheap headline. If they released the data, this would be obvious, but they have not. Hmmmmm.

Shame, shame, shame. The bar for "research" is as low as it has ever been and this proves it.

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