Screen Time and Health

In a fascinating addition to the screen time debate (aka is social media hurting the kids) Przybylski & Orben have published a study in Nature Human Behavior,  the study is based on massive amounts of statistical data and has once again shown that we shouldn’t be freaking out about screens or social media. Since the market for fear mongering books about technology that tickle parent paranoia are profitable, I doubt that this will settle the discussion.

Highlights from their study:

With this in mind, the evidence simultaneously suggests that the effects of technology might be statistically significant but so minimal that they hold little practical value.

While we find that digital technology use has a small negative association with adolescent well-being, this finding is best understood in terms of other human behaviours captured in these large-scale social datasets. When viewed in the broader context of the data, it becomes clear that the outsized weight given to digital screen-time in scientific and public discourse might not be merited on the basis of the available evidence.

More harmful than screens

For example, in all three datasets the effects of both smoking marijuana and bullying have much larger negative associations with adolescent well-being… than does technology use.

More important than reducing screen time

Positive antecedents of well-being are equally illustrative; simple actions such as getting enough sleep and regularly eating breakfast have much more positive associations with well-being than the average impact of technology use…

Best line in the paper…

Neutral factors provide perhaps the most useful context in which to judge technology engagement effects: the association of well-being with regularly eating potatoes was nearly as negative as the association with technology use…


Design and Access to the City: Notes on a lecture

What is a city? Who gets to decide how it should be used and by which groups? In order to address this I began with two examples intended to demonstrate the conflict. I purposely chose not to use large scale examples.

The first example was in 2009 when the Harvard professor Henry Louis Gates Jr was arrested for breaking into his own home. Despite being able to identify himself and that it was his own address the police “…arrested, handcuffed and banged in a cell for four hours arguably the most highly respected scholar of black history in America.”

The second example was Oscar-winner Forest Whitaker being accused of shoplifting and patted down by an overzealous employee at the Milano Market on the Upper East Side in Manhattan. This latter example is interesting because the market apologized and said of the employee: “He’s a decent man, I’m sure he didn’t mean any by wrong doing, he was just doing his job” “a sincere mistake”. An interesting thing about this is that if you search the term “Forest Whitaker deli” most of the hits are for the apology and not for the action itself.

These two minor events would never had come to the attention of anyone unless they had happened to celebrities with the power to become part of the news. They demonstrate that even among sincere well meaning people there are groups thought to have less access to the city.

Ta-Nehisi Coates wrote an excellent op-ed called The Good, Racist People , which he ends writing about the deli:

The other day I walked past this particular deli. I believe its owners to be good people. I felt ashamed at withholding business for something far beyond the merchant’s reach. I mentioned this to my wife. My wife is not like me. When she was 6, a little white boy called her cousin a nigger, and it has been war ever since. “What if they did that to your son?” she asked.

And right then I knew that I was tired of good people, that I had had all the good people I could take.

Following this introduction the lecture moved on to demonstrate the power of maps. I began with a description of the events leading up to Dr John Snow identifying the Broad Street Pump as the cause for the Soho Cholera outbreak of 1854.

Dr Snow did not believe in the miasma (bad air) theory as the cause of cholera and in order to prove that the cause was connected to the public water pump on broad street he began mapping out the cholera victims on a map. They formed a cluster around the pump.

pumpWith the help of this illustration he was able to show that the disease was local and get the pump handle removed. The cholera cases decreased rapidly from that point.

The immediate cause of the outbreak was the introduction of human waste into the water system – most probably from a mother washing an infected child’s diapers. But the fundamental reason for the huge death count was the lack of sewer and sanitation systems in this poorer area of the city. By insisting on the miasma theory the city could claim to be free from responsibility.

In the following part of the lecture I wanted to discuss how cities can maintain segregation and inequality of services despite the ways in which the rules are presented as fair and non-biased. In order to do this I used a list of maps demonstrating cities segregation by race and ethnicity created by Eric Fischer.

One dot for each 500 residents. Red is White, Blue is Black, Green is Asian, Orange is Hispanic, Yellow is Other. Images are licensed CC BY SA. There are several maps of interest and they are well worth studying. Here I will only present Philadelphia and Chicago:

Chicago: One dot for each 500 residents. Red is White, Blue is Black, Green is Asian, Orange is Hispanic, Yellow is Other.

Chicago: One dot for each 500 residents. Red is White, Blue is Black, Green is Asian, Orange is Hispanic, Yellow is Other.

Philadelphia: One dot for each 500 residents. Red is White, Blue is Black, Green is Asian, Orange is Hispanic, Yellow is Other.

Philadelphia: One dot for each 500 residents. Red is White, Blue is Black, Green is Asian, Orange is Hispanic, Yellow is Other.

As we are in Philadelphia I also included a map of household income (Demographics of Philadelphia)

 Median household income in Center City and surrounding sections, 2000 Census.

Median household income in Center City and surrounding sections, 2000 Census.

At this point I moved the discussion to the distinction between public and private spaces. I used definitions of these from Wikipedia

A public space is a social space that is generally open and accessible to people. Roads (including the pavement), public squares, parks and beaches are typically considered public space.

To a limited extent, government buildings which are open to the public, such as public libraries are public spaces, although they tend to have restricted areas and greater limits upon use.

Although not considered public space, privately owned buildings or property visible from sidewalks and public thoroughfares may affect the public visual landscape, for example, by outdoor advertising.

As the distinctions between private/public will be discussed in depth in a future lecture I left this as a relatively vague discussion and went into the problems of two of our rights as practiced in the “public space”

Free Speech: Not wanting to delve into the theory of this fascinating space I jumped straight into the heart of the discussion with a quote from Salman Rushdie: “What is freedom of expression? Without the freedom to offend, it ceases to exist” The point being that we don’t need protection to conform but we do need it to evolve. 

For this lecture I brought up outdoor advertising. This is an activity which is globally dominated by one corporation: The Clear Channel Outdoor Holdings is probably the biggest controller of outdoor communication in the world. They have the ability to decide which messages are transmitted and which are not. They have accepted advertising for fashion brands which transmit harmful body images and even brands which have been accused of glorifying gang rape. For a look at this disturbing trend in advertising see 15 Recent Ads That Glorify Sexual Violence Against Women.

The messages being pushed out on billboards can arguably seen as a one-sided participation of the public debate. Changing messages (adbusting) or even correcting willfully false information on billboards is seen as vandalism. As a demonstration that something can be done I showed a clip of a report about the clean city law, where the city of Sao Paulo has forbidden outdoor advertising.

However, when Baltimore in 2013 attempted to introduce a billboard tax Clear Channel Outdoor argued that billboards should be protected as free speech by the First Amendment and this tax would therefore be a limitation of the corporations human rights.

In order to demonstrate the right of assembly I used the demonstrations at Wall Street where the desire to protest was supported (in theory) by Mayor Bloomberg

“people have a right to protest, and if they want to protest, we’ll be happy to make sure they have locations to do it.”

Despite this sentiment the parks of New York close (even the ones without gates) at dusk or 1 am. This prevents demonstrators staying overnight. In order to circumvent this and continue the protests the demonstrators went to the privately owned Zuccotti Park where they could stay overnight. Eventually the protestors where dispersed when it was argued that the conditions were unsanitary.

Health hazard! by Seema Krishnakumar CC by nc sa

Health hazard! by Seema Krishnakumar CC by nc sa

The slides I used are here:

 

Privacy and plancenta

Judging from the number of cases where medical staff have been fired for posting images on Facebook it seems obvious that Facebook somehow manages to confuse professionals into forgetting the basic principles of privacy. Internet Cases reports on the interesting case where a student nurse was expelled for posting a picture of herself with a placenta. She has now sued the college and won.

Plaintiff nursing student and some of her classmates attended a clinical OB/GYN course at the local hospital in Olathe, Kansas last November. They got permission from their instructor to photograph themselves with a placenta. Plaintiff posted the photo on Facebook. She got expelled from school. Yes, I know you want to see the photo. Here it is. Byrnes v. Johnson County Community College, 2011 WL 166715 (D. Kan., January 19, 2011).

It is difficult to see how a picture of a placenta can be viewed as a privacy violation even if photographing body parts may be less than professional. The placenta has no rights in itself and identifying the owner of the placenta from an image of the organ seems impossible.

Thoughts before the weekend begins…

In the largest dietary study ever American researchers followed over 800 overweight subjects for two years. The participants followed four popular diets and they all lost weight. After six months the average weight loss was six kilos then this planed out and after two years the average loss was between three to four kilos. Only 15% of the participants lost 10% of their original weight and only 4% lost more than 20 kilos. The results were published in The New England Journal of Medicine.

I guess that this is good news for those of us who do not like dieting – the solution is basically what we all know. Ignore all the fancy diets. Stick to the basics: eat less, exercise more.It may sound boring but it seems to be the most simple and efficient method that does not involve surgery 🙂

Actually I do want to leave some tips I picked up from here: 14 Habits That Make You Fat

1 TV Watching
2 Eating Too Fast
3 Task Snacking
4 Frequent Fast Food Consumption
5 Eating To Manage Feelings
6 Too Busy To Exercise
7 Your Friends Can Make You Fat
8 Lack Of Sleep
9 Unaware Of Calories And Fat
10 Credit Cards
11 Missing Meals
12 Uncomfortable Clothing
13 Neglecting Scales
14 Boredom

For more details follow the link – have a good weekend.