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Steve Stewart-Williams @SteveStuWill
, 6 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.
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More from @SteveStuWill see all

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Do dogs have a theory of mind?

A lot of psychologists doubt it. But when you see this...
For those who insist on more rigorous evidence...

1. Visual perspective taking by dogs (Canis familiaris) in a Guesser–Knower task link.springer.com/article/10.100…

2. Domestic dogs are sensitive to a human’s perspective eva.mpg.de/psycho/pdf/dog…
Can cats pass the mirror self-recognition test?

Psychologists (myself included): Probably not.

Internet: Not so fast...
Read 3 tweets
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Here's a thread of my most retweeted tweets of 2018 (including one that made several people burst into tears in public)…
The difference between boys and girls…
When scientists say that, on average, men and women differ on trait X, this is what they mean (see image).

Thus the fact that you know people who are more X than most men/women is not inconsistent with the scientists' claim.
Read 15 tweets
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THREAD: Five excerpts from my book #TheApeThatUnderstoodTheUniverse cambridge.org/apethatunderst… amazon.com/Ape-that-Under…
1. Keeping It Casual quillette.com/2018/10/14/kee… quillette.com/2018/10/14/kee… via @QuilletteM

"[R]ather than being a *product* of culture, the sex difference in attitudes to casual sex often emerges *in spite* of culture."
2. Where Does Jealousy Come From? sciencefocus.com/the-human-body… via @sciencefocus

"[A]ny trait that increased the chances that a man would end up investing in his own offspring, rather than the offspring of his good-looking next-door-neighbour, had a good chance of being selected."
Read 6 tweets

Related threads

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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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Student evals of #professors measure gender, race, attractiveness, and grading approach of instructors, not educational quality. Check this thread for some resources I've compiled (and this is just the tip of the iceburg): @EnvPolicyCenter
scienceopen.com/document_file/…
tandfonline.com/doi/abs/10.108…
tandfonline.com/doi/pdf/10.108…
psycnet.apa.org/record/1982-24…
psycnet.apa.org/fulltext/2010-…
sciencedirect.com/science/articl…
ingentaconnect.com/content/prin/c…
srhe.tandfonline.com/doi/abs/10.108…
srhe.tandfonline.com/doi/abs/10.108…
psycnet.apa.org/record/1996-01…
psycnet.apa.org/record/1998-06…
link.springer.com/article/10.100…
journals.sagepub.com/doi/abs/10.310…
cambridge.org/core/journals/…
Read 5 tweets
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Thread. This paper concluding that leftwing ideology interferes with SCIENTISTS' acceptance of Evol Psych recently came out and has received a lot of (imho, unjustified) criticism, pushback, and hostility among Twitter Psychologists.
psycnet.apa.org/fulltext/2018-…
Thread. 1/n
First, its main conclusions are that blank slatist ideas are more common among those with leftist ideologies, including psychologists.
Second, human tendencies to form coalitions sometimes produces greater loyalty to those coalitions than to truth; because so many psychologists are so left, they argue, leftist ideology/blank slatism/coalitional psychology constitutes an obstacle to acceptance of EvolPsych.
Read 35 tweets
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#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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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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Conscience Accounting

After violating a moral norm, people have an increased likelihood to act prosocially. Can you provide an outlet for the good behavior? Can you remind people of previous bad deeds to encourage a good deed?

#Convert2Good #advent 1/24
Vicarious Moral Self-licensing

We see our actions as more prosocial if we regard ourselves as part of a group with a good prosocial record. Even onlookers do. Be careful about how you talk about group membership.

#Convert2Good #advent 2/24
Social Inclusion

Social exclusion reduces a wide range of prosocial behaviors. It increases aggression, risk taking & procrastination and reduces cooperation and analytical reasoning. Can users feel included or excluded in your system? What cues exist?

#Convert2Good 3/24
Read 26 tweets

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