cognitive-ability

Study examines common cognitive biases (have you tried this brain teaser?) and ways to mitigate them

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Pic: Get­ty Images

A fas­ci­nat­ing new study, Tver­sky and Kahneman’s Cog­ni­tive Illu­sions: Who Can Solve Them, and Why?, probes into the cog­ni­tive “heuris­tics and bias­es” researched by Daniel Kah­ne­man and Amos Tver­sky since the late 1960s.

If you have nev­er encoun­tered the “Lin­da brain teas­er” before, please give it a try:

Lin­da is 31 years old, sin­gle, out­spo­ken, and very bright. She majored in phi­los­o­phy. As a stu­dent, she was deeply con­cerned with issues of dis­crim­i­na­tion and social jus­tice, and also par­tic­i­pat­ed in anti-nuclear demonstrations.

Which state­ment is more probable?

(a) Lin­da is a bank teller.

(b) Lin­da is a bank teller and is active in the fem­i­nist movement.

 

Quick! What’s your answer? [Read more…] about Study exam­ines com­mon cog­ni­tive bias­es (have you tried this brain teas­er?) and ways to mit­i­gate them

Five fun brain teasers to thank evolution for our human brains and minds

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To cel­e­brate this quite-chal­leng­ing Thanks­giv­ing, here are five fun brain teasers and games that read­ers have enjoyed the most this year so far. It is always good to learn more about (and appre­ci­ate) that most pre­cious resource we all (yes, all) have up there!

#1. First of all, these days it’s always impor­tant to test your stress level

#2. You say you know the col­ors? Try the Stroop Test

#3. Check out this clas­sic atten­tion experiment

#4. What do you know about men­tal self-rota­tion?

#5. Last but not least, here are ten clas­sic illu­sions to tease your mind.

 

Thank you in advance for try­ing them, enjoy­ing them, and shar­ing them 🙂

 

To explore more brain teasers, games and puzzles:

A few brain teasers to flex those cognitive muscles over the weekend

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Look around you, wher­ev­er you are, and find three green things that may fit in your pock­ets, and three red objects that are clear­ly too big to fit.

Done?

OK, now you have six objects.

Go ahead and say their names in alpha­bet­i­cal order. 

Done?

Now name them in reverse alpha­bet­i­cal order.

Done?

Now count the total num­ber of syl­la­bles in those six words.

Not easy, right? 

All these men­tal oper­a­tions engage your work­ing mem­o­ry — think of work­ing mem­o­ry as your tem­po­rary men­tal work­space where you can hold and inte­grate sev­er­al units of infor­ma­tion at once.

Feel free to prac­tice in dif­fer­ent loca­tions … you can take these brain teasers with you, any­where you go 🙂

To explore more fun brain teaser games and puzzles:

Higher body mass index (BMI) linked to lower blood supply to the brain in large neuroimaging study

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Fig­ure 6 from the study, show­ing 3‑D ren­der­ings of cere­bral per­fu­sion aver­aged across nor­mal BMI (23), over­weight (29), and obese (37) 40-year-old men

Body weight has sur­pris­ing, alarm­ing impact on brain func­tion (Sci­ence Daily):

As a per­son­’s weight goes up, all regions of the brain go down in activ­i­ty and blood flow, accord­ing to a new brain imag­ing study in the Jour­nal of Alzheimer’s Dis­ease … sci­en­tists ana­lyzed over 35,000 func­tion­al neu­roimag­ing scans using sin­gle-pho­ton emis­sion com­put­er­ized tomog­ra­phy (SPECT) from more than 17,000 indi­vid­u­als to mea­sure blood flow and brain activ­i­ty. [Read more…] about High­er body mass index (BMI) linked to low­er blood sup­ply to the brain in large neu­roimag­ing study

Update: Should candidates to high office should pass a cognitive/ mental fitness test?

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Wow, that was a cou­ple of very insight­ful dis­cus­sions, via social media no less.

#1. The first one was about whether heads of state and can­di­dates to high office should pass a cognitive/ men­tal fit­ness test. Click HERE to read and dis­cuss some of the sharpest com­ments, such as…

  • “I won­der what brought this up.”
  • “Def­i­nite­ly. We rou­tine­ly screen appli­cants for a wide range of jobs.”
  • “Then the bal­ance of polit­i­cal pow­er would shift towards the design­ers of those tests.”
  • “That’s what debates are for.”
  • “Yes, but prob­a­bly nobody would pass it.”
  • “No, because if we can’t judge that for our­selves, then what busi­ness do we have vot­ing at all?”

#2. The sec­ond debate cen­tered on the future of men­tal health: In ten years, will we see DSM‑6 or Some­thing Much Bet­ter (SMB‑1)? Would you say “Some­thing bet­ter hope­ful­ly” or “Well con­sid­er­ing we approach men­tal health from a dis­ease model.…that’s the first prob­lem” or “DSM is a tool, and a very use­ful one. As any oth­er tool it depends on the use you make of it,” or some­thing else.

Wel­come to a new edi­tion of Sharp­Brains’ e‑newsletter, fea­tur­ing as always new think­ing, research and tools for life­long brain health and men­tal fitness.

#3. Study: Across all ide­o­log­i­cal groups, high­er cog­ni­tive abil­i­ty and intel­lec­tu­al humil­i­ty pre­dicts sup­port for free speech

#4. Let’s under­stand how to increase resis­tance to tau and amy­loid pro­teins so we can all become “super-agers.”  Brain scans show low­er accu­mu­la­tion of tau and amy­loid pathol­o­gy among cog­ni­tive “super-agers”

#5. For exam­ple: Jobs with low phys­i­cal stress and good work­ing con­di­tions linked to larg­er hip­pocam­pus and bet­ter memory

#6. Want­ed: 30,000 vol­un­teers! Large UC study to inves­ti­gate when and how brain train­ing trans­fers (or does not) to broad­er cog­ni­tive and health benefits

#7. Time­ly ques­tions: “How com­mon are neu­ro­log­i­cal and psy­chi­atric com­pli­ca­tions in patients with COVID-19? What pro­por­tion of neu­ro­log­i­cal and psy­chi­atric com­pli­ca­tions affect the (cen­tral ner­vous sys­tem) ver­sus the periph­er­al ner­vous sys­tem, and are nov­el syn­dromes emerg­ing? And who is most at risk?” Sur­vey finds ischaemic stroke and altered men­tal sta­tus as most com­mon neu­ro­log­i­cal com­pli­ca­tions in severe COVID-19 cases

#8. “Our mind is one of the only things that we can­not con­sis­tent­ly mea­sure and quan­ti­fy. And humans do remark­able things when we can mea­sure some­thing.”  Ker­nel rais­es $53 mil­lion to ease access to rich neur­al data and mar­ket Neu­ro­science as a Ser­vice (NaaS)

#9. “We are tak­ing proven cog­ni­tive behav­ioral ther­a­pies and ful­ly automat­ing them to deliv­er the care scal­ably and con­sis­tent­ly as drugs.” Start­up Big Health rais­es $39M to uni­ver­sal­ize access to cog­ni­tive behav­ioral ther­a­py (CBT) for anx­i­ety and poor sleep

#10. Build­ing on Bill Gates’ orig­i­nal goal of ‘a com­put­er on every desk,’ per­haps it’s time for ‘real-time men­tal health sup­port on every phone.’ Microsoft announces sup­port for three inno­v­a­tive men­tal health ser­vices har­ness­ing arti­fi­cial intel­li­gence (AI)

#11. Res­o­nance. Empa­thy. Aware­ness. Com­pas­sion. Hope. And our favorite… Humor. Six tips to help reg­u­late stress lev­els in our organizations

#12. Final­ly, a fun brain teas­er. What do you see, rec­tan­gles or cir­cles?

 

Wish­ing you a good and safe August,

The Sharp­Brains Team

Study: Across all ideological groups, higher cognitive ability and intellectual humility predicts support for free speech

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Free­dom of Speech: A Right for Every­body, or Only for Like-Mind­ed Peo­ple? (Het­ero­dox Academy):

Free­dom of speech is often con­sid­ered key to a well-func­tion­al democ­ra­cy. In many coun­tries, free­dom of speech is con­sid­ered a more impor­tant demo­c­ra­t­ic val­ue than reg­u­lar elec­tions. But do peo­ple gen­uine­ly believe in the virtues of open debates by sup­port­ing free­dom of speech for every social group? Or do they sup­port free speech only for their own groups? In a recent­ly pub­lished paper in Social Psy­cho­log­i­cal and Per­son­al­i­ty Sci­ence, we aimed to answer these ques­tions, and we sought to explore whether high­er cog­ni­tive abil­i­ty was asso­ci­at­ed with more prin­ci­pled posi­tions on free speech. We expect­ed that peo­ple with high­er cog­ni­tive abil­i­ties would be more inclined to embrace the open exchange of ideas, where­in view­points can be scru­ti­nized and chal­lenged in order to fos­ter informed deci­sion mak­ing and knowledge…

[Read more…] about Study: Across all ide­o­log­i­cal groups, high­er cog­ni­tive abil­i­ty and intel­lec­tu­al humil­i­ty pre­dicts sup­port for free speech