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How We Decide

2/27/2016

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​How We Decide
Author:  Jonah Lehrer
ISBN:  978-0-618-62011-1
 
APA Style Citation
Lehrer, J. (2009).  How We Decide. New York, New York:  Houghton Mifflin.
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Book Description
Philosophers, psychologists, and others who attempt to determine the cause of human and animal behavior have long debated the influence of both rationality and emotion.  Plato believed that with enough conscious evaluation the rational self would prevail, while others have argued that consciousness was not enough. How We Decide attempts to determine the difference between making a good and a bad decision which sometimes is the difference between winning and losing:  money, gambling, and even in some cases, life and are significantly impacted by the decision we make.  While there is not an either/or answer to the rational/emotional debate, author Jonah Lehrer argues that for too long people have discounted the importance of the emotional components of the brain when investigating decision-making.  This, he argues explains why the attempts to create robots or computers with artificial intelligence have been relatively unsuccessful.  Although the robots may have cognitively abilities, they do not have the emotional capacity required for effective decision-making.
 
Lehrer provides insight into how neuroscience can better help us understand how our brain makes decisions and how we can use this information to make better ones.  The orbitofrontal cortex (OBF) for example which connects the emotional limbic system to the rational frontal lobe has in important role in decision making.  Individuals who have had tumors in this region of the brain removed become paralyzed by their inability to make decisions, even small ones, such as what type of cereal to buy or what day would work best for an appointment. 
 
Dopamine pathways, which are the pleasure centers in the midbrain and run through the nucleus accumbens and hypothalamus, drive behavior that leads to rewards which may impact the decisions one makes, even if those decisions are not in the best interests of the individuals making them.  Dopamine reward pathways are activated when rats eat a treat or when a person wins at a slot machine.  Dopamine reward pathways also change with experience, Lehrer notes, “Fool me once, shame on you, fool me twice, shame on my dopamine neurons.” Schizophrenics sometimes have an abundance of dopamine neurons which interferes with the accurate prediction of events, they instead hallucinate false patterns and sensory information.  These dopamine pathways need to be continually retrained or their predictive accuracy declines.  Those who suffer from Parkinson’s disease often lack dopamine and are treated with dopamine agonists.  In 13% of cases Parkinson’s patients treated with dopamine agonist drugs become gambling addicts because of the excess of dopamine running through their system.  A win in gambling activates the same dopamine reward pathways and triggers the desire to win again and again.
 
Another area of the brain, the anterior cingulate cortex, influences decisions because it allows us to detect errors in our decisions.  Neuroscientists refer to the circuitry emanating from this area of the brain as the “oh shit” circuit.  This brain mechanism allows people to control what they know with what they feel.  When this area is removed from primates, their behavior becomes erratic.  The anterior cingulate cortex also contains spindle neurons which are found only in humans and great apes and are named for their long slender structure.  This structure allows the neuron to convey emotions across the entire brain and these cells as a result are related to higher order cognitive functions. 
 
Lehrer recounts many examples of how the seemingly intuitive decisions we make each day are actually based on past experiences and the more experience we have, the better we are able to make accurate split second decisions. Lehrer features Tom Brady’s performance in the 2002 Super Bowl in which the Patriots were predicted to lose to the highly favored St. Louis Rams.  Tom Brady and the Patriots decided in the last minute of the game to work their way down the field in a series of passes that might have resulted in a Ram’s interception.  Most considered this highly risky, but the young Brady seemed confident that he could lead his team to success.  Ultimately, Brady brought the team within field goal range and the Patriots won in the last seconds of the game.  Brady did not have time to evaluate each of the possible passes he could make, after the snap and before the opposing team attempted to sack him yet, he was able to make the correct decision on where to throw a pass over and over again. Explicit knowledge that initially takes much cognitive ability eventually becomes intuitive.  However, we can often be wrong when relying on our intuition.  The idea of a “hot hand” specifically in basketball has been refuted and evidence shows that when one has made previous shots, they actually declined in their likelihood of scoring despite what observers believed.  Whether it is slot machines or a random shuffle of one’s i-tunes, what is actually random does not always seem to be. This violates our intuitive belief of what random events “look like”.  For example, if a family who has five girls and is having another baby, most people will believe that the next baby will be a boy despite the roughly 50-50 chance of that happening.  The genders of the existing children are completely separate and do not factor into the odds of what the new baby’s gender will be.  
 
We are also averse to losing when making decisions.  When questions are framed that lead to the same outcome, those that are framed as losing are selected far less frequently than those that are framed as winning (see activity).  This can lead to poor decision making in terms of making investments in the stock market.  We may be better off in the long run hanging on to a stock that is losing money at the moment, but we often trade when the stock is at its lowest for fear of losing more money than we already have.  Bond returns grow more slowly than stocks, but are less variable.  Many people would prefer to invest in bonds because they are less likely to lose money (but also less likely to earn very much money) when they would be better off investing in higher risk stocks.  Loss aversion also makes credit cards easier to use.  If we had to pay cash for an item we wanted, we would feel the loss because we would have to sacrifice cash at the moment of purchase, but with credit cards the bill does not come until later and we feel immediate gratification with the purchase without experiencing the loss.  Individuals tend to overvalue immediate gains at the cost of future expenses. When someone thinks about losing something, the amygdala is automatically activated which is part of the physiological reason for why people hate losing.
 
Sometimes more access to information leads to a less favorable result which can be seen in a variety of practical applications.  Those who are involved with tracking the stock market and have access to much information about the history of a given stock actually performed worse because of constant trading than those who made no had no knowledge of the stock market and made no trades in a given period.  Medical technology, specifically MRIs for back pain, has made far more information available to doctors.  One might believe that this wealth of information has dramatically improved results for those experiencing back pain but that is not the case.  Historically, doctors recommended rest and people’s back pain generally subsided.  Information from MRI’s has led to many unnecessary surgeries and actually has led to a lower recovery rate. 
 
Some individuals like convicted killer John Wayne Gacy do not respond emotionally to stimuli that would otherwise activate the emotional limbic system.  Gacy had an antisocial personality disorder which is often associated with an above average IQ but a damaged emotional brain.  Gacy was not disgusted by torturing the young men he killed and was not able to express empathy or sympathy for his victims or their families. For most individuals, the limbic system helps guide decisions and allows us to “feel” when we are doing something wrong.  Gacy might have know cognitively that his actions were wrong, but he did not “feel” it as others would.  Those with antisocial personality disorder also do not get angry, they have no particular response to highly emotional words such as ‘rape’ or ‘kill’ and do not responded differently to emotional words than they do to neutral words such as ‘sit’ or ‘walk’.  Others such as violent domestic batters also have erratic emotional systems.  They actually calm down and display lower blood pressure and pulse rates after a violent attack.  Likewise, individuals with Autism Spectrum Disorder have an impaired ability to interact emotionally with others.  Individuals with autism also demonstrate ineffective decision-making as a result of their irregular emotional responses.  Autistic individuals often have challenges with mirror neurons which allow us to mirror the movements and emotions of others.  In a study conducted at UCLA, the brains of autistic individuals were examined while they viewed emotional photographs and the scans indicated that there was little activity in the mirror-neuron area.  Additionally, autistic individuals look at faces with the part of the brain that normally identifies objects.
 
How We Decide brings together the cognitive and neurobiological components of an introductory psychology course.  While cognitive psychology has longed examined decision-making, the biological underpinnings to these decisions (whether correct or not) help to support psychology’s effort to better understand human behavior. It should be noted that this book may no longer be available in some areas as there has been some questions to the authenticity of the interviews Jonah Lehrer cites in this and other books.  You can find below more information about this controversy by examining the related resources section.
 
Other Related Resources
 
Jonah Lehrer’s Blog
The author has an interesting and informative blog related to current topics in cognitive psychology.  The post from January 25th, 2016 examines cognitive errors by looking at the hit Netflix series, Making a Murderer.
http://www.jonahlehrer.com/?offset=1428246858878
 
LA times:  Making a Case for Letting Emotions in Life’s Decision making processes.
http://articles.latimes.com/2009/feb/24/entertainment/et-book24
 
Video on How We Decide
An speech given by author Jonah Lehrer describes his work in series of five YouTube videos.
https://www.youtube.com/watch?v=Xllxee8ZnkE
 
When Instinct Trumps Reason
An interview with author Jonah Lehrer captured in a series of five YouTube videos.
https://www.youtube.com/watch?v=yTeAaKlnz1g
 
How We Decide Pulled from the Shelves
Short articles describing the controversy regarding the authors use of quotations. 
http://www.huffingtonpost.com/2013/03/02/how-we-decide-jonah-lehre_n_2796208.html
 
http://www.thedailybeast.com/articles/2013/03/01/publisher-pulls-jonah-lehrer-s-how-we-decide-from-stores.html
 
https://www.psychologytoday.com/blog/pyramids-meaning/201208/jonah-lehrer-charmed-me-then-blatantly-lied-me-about-science
 
Psychological Figures and Concepts
Rene Descartes
Carol Dweck
Walter Freeman
Sigmund Freud
Harry Harlow
William James
Rosemary Kennedy
George Miller
Walter Mischel
James Olds and Peter Milner
Plato
Herbert Simon
Claude Steele
Agonists
Anchoring Effect
Anchoring Heuristics
Anterior Cingulate Cortex (ACC)
Arousal Theory
Artificial Intelligence
Brainstem
Cognitive Dissonance
Confirmation Bias
Contact Comfort
Corpus Callosum
Diencephalon
Dopamine
Ego
Framing Effect
Frontal Lobe
Gambler’s Fallacy
Groupthink
Hypothalamus
Id
Illusory Correlation
Limbic System
Loss Aversion
Loss Frame
Metacognition
Midbrain
Mirror Neurons
MRI
Natural Selection
Neurons
Nucleus Accumbens
Oedipus Complex
Orbitofrontal Cortex (OFC)
Overconfidence
Parkinson’s Disease
Pleasure Principle
Prefrontal Cortex
Prefrontal Lobotomy
Right Hemisphere
Schizophrenia
Spindle Neurons
Split-Brain Patient
Stereotype Threat
Thalamus
Top-Down Processing
Wonderlic Intelligence Test
Working Memory
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You Are Now Less Dumb: How to Conquer Mob Mentality, How to Buy Happiness, and All the Other Ways to Outsmart Yourself

2/7/2016

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​You Are Now Less Dumb: How to Conquer Mob Mentality, How to Buy Happiness, and All the Other Ways to Outsmart Yourself
Author:  David McRaney
ISBN:  978-1-59240-805-4
 
APA Style Citation
McRaney, David (2013). You Are Now Less Dumb: How to Conquer Mob Mentality, How to Buy Happiness, and All the Other Ways to Outsmart Yourself.  New York: Penguin Group.
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Book Description
You Are Now Less Dumb, is the follow up book by author and blogger David McRaney to the best selling, You Are Not So Smart.  While his first book focused mainly on social psychology topics, the second book contains a mixture of social psychology and cognitive biases.  The research presented in the book is related to numerous other units in the introduction to psychology curriculum such as motivation and emotion, learning, and abnormal psychology.  The book is designed in a similar fashion to the author’s earlier book in which each chapter introduces a distinct concept by contrasting a misconception with the truth as shown by empirical evidence.  For example, Chapter 2 discusses the common belief fallacy that “the larger the consensus, the more likely something is correct” and the truth that “a belief is not more likely to be accurate just because many people share it.”  The misconception / truth structure highlights for students the need to create and test hypotheses even when examining phenomenon that seem like common sense. We do not know a result until we actually test it.
 
You Are Now Less Dumb illustrates how a wide range of cognitive biases and other fallacies can lead us to incorrect conclusions.  Each of the chapters is about ten pages in length and provides an in-depth analysis of the research related to the principle discussed as well as practical applications.  The book includes chapters on topics that are covered in most introductory psychology courses (e.g. halo effect, misattribution of arousal, deindividuation, and the overjustification effect) as well as chapters on ideas that appear less frequently (e.g. common belief fallacy, post hoc fallacy, ego depletion, sunk cost fallacy, and the self-enhancement bias). 
 
The chapter on the halo effect is especially interesting because it traces the origin of the term to the psychologist Edward L. Thorndike who psychology students most likely associate with instrumental learning and the law of effect.  Thorndike was a key contributor to both educational and occupational psychology.  He began his work creating tests for the Army to evaluate the intelligence and ability of soldiers.  It was Thorndike’s interest in turning qualitative evaluations of individuals into quantitative data that led to the discovery of the halo effect. This idea of turning people into numbers in schools and businesses remains popular today because representing people’s abilities by using a numerical score makes it easier to produce charts and graphs that track their performance.  By observing the results of quantified performance evaluations Thorndike observed that over time, individuals who were rated highly on one trait would also be rated highly on other, often unrelated traits.  He published his research initially using data from U.S. Army officer reviews.  He found that evaluators, even if they were instructed to rate each category independently, gave officers consistent ratings across categories.  Individuals who were rated high in one category were rated highly in other categories and the reverse was true as well.  Thorndike noted that in particular, pilots who had superior ratings in terms of their ability to maneuver a plane also received high marks for leadership.  Thorndike found this to be unlikely considering how young most of the pilots were at the time of the ratings.  Thorndike originally called this phenomenon a “halo of general merit”.  The halo effect persists because the brain often looks for the fastest and simplest way to make categorizations.  The book goes on to provide research evidence and numerous examples of the impact of the halo effect in particular with relation to one’s assumptions about attractiveness.
 
The chapter on deindividuation addresses the common misconception that individuals who engage in rioting and looting are bad individuals taking advantage of an easy opportunity to engage in violence.  Psychological research shows that under the right circumstances, most individuals are capable of engaging in antisocial activities driven by a mob mentality.  The chapter opens with several disturbing accounts of how this phenomenon has led suicidal individuals to jump to their deaths from bridges and building at the urging of a crowd who might in other situations have lived.  The individuals making up the crowd in these situations are in a state of decreased personal awareness that causes them to lose their sense of self-restraint and anonymity in a group.  The author describes a variety of studies that examine deindividuation under controlled settings often involving the use of costumes or masks. 
 
In a 1969 study, psychologist Philip Zimbardo asked female participants to deliver electric shocks to strangers allegedly to study the effect of stress on creativity.  Half of the participants were randomly assigned to wear oversized lab coats, large hoods, and numbered tags designed to create feelings of deindividuation.  The control condition did not wear hoods or lab coats and wore badges that identified them by their name.  The participants watched the individuals receiving the “shocks” through a one-way mirror.  In reality no shocks were delivered and the individuals receiving “shocks” were actors hired as confederates. The participants were placed in groups of four and told to begin the experiment.  Zimbardo did not tell them how often to give shocks or how long the shocks should last in an effort to eliminate the variables of conformity and obedience to authority (Zimbardo was aware of Milgram’s landmark work on the topic from 1963).  This meant that the variables of anonymity and deindividuation in the experimental group could be more effectively isolated. The result confirmed in every trial, was that the women wearing hoods shocked the test takers twice as often.  As the test continued, the shocks were more given more frequently and for longer time periods by hooded participants. In this experiment the hoods created deindividuation, which allowed negative behavior that, is usually prevented by social norms to occur without any reference to justice and fairness. Deindividuation is the force behind the comments posted in connection with YouTube videos or online articles that are often extremely offensive.  The author of You are Now Less Dumb also discusses the potentially positive results of deindividuation.  For example, the same deindividuation phenomenon that causes individuals to loot and riot when they have a loss of identity in a crowd can also lead individuals to pitch in to help with rescue efforts after a disaster.  
 
David McRaney’s engaging and easy to read style makes You Are Now Less Dumb, an excellent source for classroom materials and supplemental student reading.  The design of the book makes it easy to read the chapters in any order giving the reader an ability to jump around from topic to topic.  Distinct and unique chapters also make it possible for the book to be used as a larger project where students working alone or in groups each read, research, and report out on a different chapter.  Despite highlighting the various blind spots humans have that distort reality McRaney’s book is positive and informative. According to the author, “self delusion makes you human, but you can do something about it. Delusion, that is. You’re stuck with the human thing”.
 
Other Related Resources
 
You Are Not So Smart Blog
Author David McRaney’s blog which inspired the books You Are Not So Smart and You are Now Less Dumb that includes podcasts and videos on the topics discussed in the books. 
http://youarenotsosmart.com/
 
Deindividuation Post - You Are Not So Smart Blog
This blog post mirrors the chapter on deindividuation in the book.
http://youarenotsosmart.com/2011/02/10/deindividuation/
 
Geese That Grow on Trees - trailer for You Are Now Less Dumb
Short YouTube trailer that introduces the book by explaining the importance of the scientific method and questioning hypotheses that could be used as a discussion starter in the research unit.
https://www.youtube.com/watch?v=zWSe2qezhm4
 
The Halo Effect
This video, created by Philip Zimbardo’s Heroic Imagination Project, effectively illustrates how the halo effect can be observed and measured.
https://www.youtube.com/watch?v=UEho_4ejkNw
 
This blog post from PsyBlog summarizes the halo effect.
http://www.spring.org.uk/2007/10/halo-effect-when-your-own-mind-is.php
 
Psychological Figures and Concepts
Dan Ariely
Leon Festinger
Sigmund Freud
William James
Muzafer Sherif
Carol Tavris
Edward Thorndike
Philip Zimbardo
Actor-Observer Bias
Affect
Affect Heuristic
Anterograde Amnesia
Cognitive Dissonance
Common Belief Fallacy
Confirmation Bias
Deindividuation
False Consensus
Halo Effect
Id, Ego, Superego
The Lucifer Effect
Misattribution of Arousal
Mistakes Were Made, But Not by Me
Narcissism
Norms
Overjustification Effect
Predictably Irrational
Robbers Cave Experiment (Sherif)
Scientific Method
Self-Serving Bias
Semantic Memory
Shaky Bridge Experiment (Aron and Dutton)
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    Laura Brandt, Nancy Fenton, and Jessica Flitter are AP Psychology instructors. Nancy Fenton teaches at  Adlai E. Stevenson High School in Lincolnshire, Illinois, Laura Brandt teaches at Libertyville High School in Libertyville Illinois and Jessica Flitter teachers at West Bend East High School in West Bend, Wisconsin.
    If you are interested in reviewing a book for the blog or have comments or questions, please e-mail us at either [email protected] or [email protected] or [email protected].

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