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Steve Stewart-Williams
@SteveStuWill
, 7 tweets, 4 min read Read on Twitter
More evidence that we tend to overestimate the power of media: Movie smoking has little if any effect on teen smoking. psycnet.apa.org/doiLanding?doi…
Other examples...

1. Media images have little effect on body dissatisfaction or eating disorders. Largest effect: genes. Second largest: peer influence. christopherjferguson.com/Who%20Is%20the…
2. Media sex and violence has surprisingly little effect on real-world behaviour. looooker.com/wp-content/upl… link.springer.com/article/10.100…
3. Do violent video games make people more violent? Nope - if anything, it's the other way around. houstonchronicle.com/local/gray-mat… sciencedirect.com/science/articl…

Ban non-violent video games!
4. Do violent movies increase real-world violence? Nope – if anything, they do the reverse. interpersonalresearch.weebly.com/uploads/1/0/4/…

Ban non-violent movies!
5. Does pornography increase the incidence of sexual aggression? Nope – once again, if anything, it has the opposite effect. christopherjferguson.com/pornography.pdf

See psychologytoday.com/intl/blog/all-… for a user-friendly overview of the evidence.
On the other hand...
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More from @SteveStuWill see all

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Steve Stewart-Williams
@SteveStuWill
The Naturalistic Fallacy: Because X is part of human nature, X is morally good or permissible.

The Moralistic Fallacy: Because X is not morally good or permissible, X is not part of human nature.

Source: books.google.com.my/books?id=ORGPB… 1/2
PS: Contrary to the excerpt, Hume didn't coin the phrase "naturalistic fallacy"; it was G. E. Moore – and Moore had something different in mind than the fallacy of assuming that natural = good. But that's the most common definition today. en.wikipedia.org/wiki/Naturalis… 2/2
Research on the moralistic fallacy: People see "morally offensive" scientific hypotheses as less plausible.
(link: link.springer.com/article/10.100…)
link.springer.com/article/10.100
Read 3 tweets
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Steve Stewart-Williams
@SteveStuWill
Great thread from @coldxman. I make a similar point in TATUTU, responding to the claim that certain sex diffs are products of social pressure. Often the pressure goes in the other direction, and the diffs appear *despite* social pressure not because of it! amazon.com/Ape-that-Under…
Exhibit A: Sex differences in attitudes to casual sex
Exhibit B: Sex differences in aggression
Read 4 tweets
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Steve Stewart-Williams
@SteveStuWill
THREAD: A New Approach to Measuring Gender Inequality

The most common measures of national gender inequality (e.g., the GGGI) have a number of flaws, not least of which is that they ignore hardships experienced disproportionately by boys and men. journals.plos.org/plosone/articl… [1/3]
Accordingly, Stoet and Geary have proposed a new measure – the Basic Index of Gender Inequality (or BIGI) – which they argue gives a more accurate picture of overall levels of gender inequality. journals.plos.org/plosone/articl… [2/3]
Using this new measure, Stoet and Geary have turned up some interesting and unexpected findings regarding patterns of gender inequality across nations. journals.plos.org/plosone/articl… [3/3]
Read 3 tweets

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Nate Honeycutt
@natehoneycutt
Little late, but ... (long) tweet-summary & highlights from SPSP political psych Pre-Conference DEBATE on "Does Political Viewpoint Diversity Affect the Quality of Our Science?" 1/n
First up, Deb ... How might ideological diversity (or lack thereof) impact research? ... Lots of ways, at every stage of the research process ... 2/n
Scholars stage: "who are we inspiring to be the next generation of researchers? Who are we telling are welcome?"

Only 4% in SPSP survey identified as cons

Substant'l minority of academics indicate a willingness to discriminate psyarxiv.com/e4xw3 3/n
Read 25 tweets
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Isabela Granic
@PlayNiceInst
THREAD: About the Fortnite hysteria, from a professor who studies video games and mental health and who is also a parent of two 12-year old boys that play Fortnite. 1/N
TL;DR: The game is not evil. Nor is it particularly different in inciting the moral panic engendered by past popular media trends. Parenting is the more likely cause for concerns that are blamed on the game. 2/N
Fortnite is a well-designed game - with a super-responsive development team - that appeals to a large age-range, particularly those who love social, adrenaline-fueled play. It's doing what almost all games aim to do: Keep players engaged. 3/N
Read 15 tweets
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Loose_Bull
@loosebool
#Evidence
1. On June 18, 1957, after checking with Maulana Kalam Azad and Dr.Rajendra Prasad, Durga Das wrote the following line in his weekly column in The Hindustan Times, “if he (Nehru) is consciously trying to build anyone as his successor, he is building up his daughter.”
More #Evidence Mr. Tharoor-
2. Indira Gandhi went with Nehru to all political and administrative functions and got introduced to all the state leaders of the Congress party 🤔
#Evidence
3. Indira addressed election meetings, presided over Congress women’s committees, acted as hostess when Nehru entertained visitors and he took her with him when he traveled abroad😌
Read 6 tweets
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Nicole Bedera
@NBedera
I'm a sociologist who studies adolescent sexual violence. On this thread, I will be live tweeting the #Kavanaugh hearing, chiming in with sociological insights and research findings.
Full disclosure--I will probably step away for parts of it. While many conservatives have cast feminists as people who rejoice at allegations of sexual assault against powerful men, this is a painful process for us. We know survivors. We are survivors. And I will need breaks.
It does not bode well that the beginning of this hearing is starting with equating #Kavanaugh and #Ford's experiences with harassment following Dr. Ford's allegations. They are absolutely not the same.
Read 115 tweets
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Ben Wilbrink
@benwilbrink
Assumptions and ideology. How psychology took a wrong turn. Scott Meier describes it in a few sentences:
James Mill on intelligence, a small quote that says it all goo.gl/qrEib6
An 18th century skill: critical thinking. The Enlightenment: instead of following the dogma’s of the church and the state, put your trust in human reason. Reason juxtaposed to dogmatic following of church and state dogma. Makes sense, doesn't it? [see: Lenders 1988 p. 132]
Read 34 tweets
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Eiko Fried
@EikoFried
1/ Why depression is not a useful or reasonable phenotype for research in clinical psychology, psychiatry, or medicine: a summary of evidence in 18 tweets.

Sx = symptoms, MDD = major depressive disorder.
2/ There are ~280 scales to assess MDD severity (tandfonline.com/doi/abs/10.120…). Scales are often only weakly inter-correlated, and differ widely in symptom content. The 7 most commonly used rating scales encompass > 50 disparate Sx (ncbi.nlm.nih.gov/pubmed/27792962).
3/ This means that MDD is a very ill-defined phenotype, with little agreement on how to measure it (imagine this amount of disagreement for e.g. cancer or HIV). The DSM-5 defines 9 Sx, but these were chosen based on subjective, not psychometric reasons (biomedcentral.com/1741-7015/13/72).
Read 18 tweets

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