The Day I Got Frustrated Reading An Article About Psychiatry in Scientific American

I have a great fondness for Scientific American. Even before starting medical school I would spend many hours reading Scientific American to get an overview of developments in science. The articles have always been of a high standard and easily engage the reader as well as getting the message out to a wide readership. However today I read this Scientific American Blog article about the work being done by the American Psychiatric Association to improve the reliability of Psychiatric diagnoses. The focus quickly changes to the author who tells us what he was thinking about things, how he got into an exchange with one of the presenters and how he walked out. Although the human element is always interesting, in science journalism it is expected that the science story will take precedence over behind-the-scenes soap operas. This is especially the case if the article has to be squeezed into a few paragraphs.

The author then manages to juggle the soap opera with a commentary about data presentation and again I have issue with this commentary. The author argues that the use of bar charts to display information about responses to a survey is ‘deceptive’ and suggests instead that pie charts should be used. I would argue to the contrary that with simple data, both methods of presentation are helpful. Here is an example and I will let the readers decide for themselves. Suppose we want to graph the following data

A=5  B=10  C=20 D=5 E=60

The data can be graphed with a pie chart or a bar chart as below.

As far as I can see both methods help me to quickly eyeball the data. In this example I cannot see how one diagram can be more ‘deceptive’ than another. The charts are simply representing the underlying data. So I challenge the assertion about the suitability of the bar chart based on my reading of the author’s article.

However after all of this, events further unfolded on Twitter. This time along with the author, two other twitterers who I hold in high regard, tweeted the piece uncritically to a combined audience of approximately 30,000 people. In my opinion, these issues detract from what should have been the main focus of the article – a discussion about the extensive scientific work done by the American Psychiatric Association to investigate and improve the reliability of Psychiatric diagnoses. In fairness, the author responded to one of my tweets and suggested he would clarify matters. I still hold Scientific American in the highest regards as i’m sure this article is just a blip for a periodical that has always achieved the highest standards of science journalism and brought science to popular culture.

Addendum

The original article has been updated with the author agreeing on the point about the bar and pie charts and clarifying other points about the data presentation.

Index: There are indices for the TAWOP site here and here Twitter: You can follow ‘The Amazing World of Psychiatry’ Twitter by clicking on this link. Podcast: You can listen to this post on Odiogo by clicking on this link (there may be a small delay between publishing of the blog article and the availability of the podcast). It is available for a limited period. TAWOP Channel: You can follow the TAWOP Channel on YouTube by clicking on this link. Responses: If you have any comments, you can leave them below or alternatively e-mail justinmarley17@yahoo.co.uk. Disclaimer: The comments made here represent the opinions of the author and do not represent the profession or any body/organisation. The comments made here are not meant as a source of medical advice and those seeking medical advice are advised to consult with their own doctor. The author is not responsible for the contents of any external sites that are linked to in this blog.

2 thoughts on “The Day I Got Frustrated Reading An Article About Psychiatry in Scientific American

  1. Brian

    Agreed there’s no material difference in the presentation of these data. The larger point though is that with the advent of blogs on the Scientific American website we need to recalibrate our expectations. Blogs by their nature are visceral, ephemeral things – for me I just cannot ascribe to them the same standing as a fully vetted article.

  2. Pingback: DSM-V is Discussed at the American Psychiatric Association’s 165th Conference – News Round-Up: May 2012 2nd Edition « The Amazing World of Psychiatry: A Psychiatry Blog

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