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The Living Force
In Thinking, Fast And Slow we expand our knowledge on the need to engage system2 in deliberated, effortful thinking.
As the author explains system2 is usually in a comfortable low-effort mode adopting the suggestions of System1 with little or no modification. My interest then was in discovering and put into practice system2 tools. But, Which are the tools and capabilities of system2?
For the descriptions of System2 in the book (when it is properly working it’s effortful, and deliberately controlled), it seems it has to do with the Prefrontal Cortex?
_http://70.32.73.82/brain-science/cool-brain-science/a-crash-course-in-neuroscience/prefrontal-cortex/
Seeing the benefits and magnificent skills of the Prefrontal Cortex I thought I could devote some space to expand on it even though it has been already mentioned in others threads for example here and here.
_http://70.32.73.82/brain-science/cool-brain-science/a-crash-course-in-neuroscience/prefrontal-cortex/
There is more but so far it seems clear that the prefrontal cortex is a crucial element in our lives, for ours and others well being, just think for a minute of a good percentage of people in this world being able to do good use of it…
Ok so, I thought to start by studying one of the competences of the prefrontal cortex, Critical thinking, which I thought would be of great use to start training it. I started to wonder then about its real meaning, competences and effectiveness, and found this:
I continued then searching more about what Dr.Linda Elder had to say about Critical thinking and found that She and Dr.Richard Paul had written some (in principle) very interesting books on the matter.
I am already half trough "The Art of Asking Essential Questions": _http://www.criticalthinking.org/store/products/the-art-of-asking-essential-questions/168 which I managed to find in Spanish, and must say that I’m fascinated by the amount of tools that we have available to put our minds to work, it is making me more aware of how Laura and Ark greatly use their minds, and how much effort it takes!
And so, Has anyone read them or found other sources on Critical Thinking that can be useful?
As the author explains system2 is usually in a comfortable low-effort mode adopting the suggestions of System1 with little or no modification. My interest then was in discovering and put into practice system2 tools. But, Which are the tools and capabilities of system2?
For the descriptions of System2 in the book (when it is properly working it’s effortful, and deliberately controlled), it seems it has to do with the Prefrontal Cortex?
_http://70.32.73.82/brain-science/cool-brain-science/a-crash-course-in-neuroscience/prefrontal-cortex/
Functions of the Prefrontal Cortex
• attention span
• perseverance
• planning
• judgment
• impulse control
• organization
• self-monitoring and supervision
• problem solving
• critical thinking
• forward thinking
• learning from experience and mistakes
• ability to feel and express emotions
• influences the limbic system
• empathy
• internal supervisión
Problems Associated with the Prefrontal Cortex
• short attention span
• distractibility
• lack of perseverance
• impulse control problems
• hyperactivity
• chronic lateness, poor time management
• poor organization and planning
• procrastination
• unavailability of emotions
• misperceptions
• poor judgement
• trouble learning from experience
• short term memory problems
• social and test anxiety
• lying
• misperceptions
Seeing the benefits and magnificent skills of the Prefrontal Cortex I thought I could devote some space to expand on it even though it has been already mentioned in others threads for example here and here.
_http://70.32.73.82/brain-science/cool-brain-science/a-crash-course-in-neuroscience/prefrontal-cortex/
The prefrontal cortex (PFC) is the most evolved part of the brain. It occupies the front third of the brain, underneath the forehead. It is often divided into three sections: the dorsal lateral section (on the outside surface of the PFC), the inferior orbital section (on the front undersurface of the brain) and the cingulate gyrus (which runs through the middle of the frontal lobes). The cingulate gyrus, often considered as part of the limbic system, will be covered in its own chapter. The dorsal lateral and inferior orbital gyrus are often termed the executive control center of the brain and will be discussed together in this chapter. When necessary, I’ll distinguish what is known about their function.
Overall, the PFC is the part of the brain that watches, supervises, guides, directs and focuses your behavior. It contains “executive functions,” such as time management, judgment, impulse control, planning, organization and critical thinking. Our ability as a species to think, plan ahead, use time wisely and communicate with others is heavily influenced by this part of the brain. The PFC is responsible for behaviors that are necessary for you to be appropriate, goal directed, socially responsible and effective.
North Carolina neuropsychiatrist Thomas Gualtieri, MD succinctly summarized the human functions of the PFC, “.the capacity to formulate goals, to make plans for their execution, to carry them out in an effective way, and to change course and improvise in the face of obstacles or failure, and to do so successfully, in the absence of external direction or structure. The capacity of the individual to generate goals and to achieve them is considered to be an essential aspect of a mature and effective personality. It is not a social convention or an artifact of culture. It is hard wired in the construction of the prefrontal cortex and its connections.” (In The Neuropsychiatry of Personality Disorders, 1996, Edited by John Ratey. MD.)
The PFC helps you think about what you say or do before you say or do it (especially the inferior orbital PFC). The PFC helps you, in accordance with your experience, select actions between alternatives in social and work situations. For example, if you are having a disagreement with your spouse and you have good PFC function you are more likely to give a thoughtful response that helps the situation. If you have poor PFC function you are more likely to do or say something that will make the situation worse. Likewise, if you’re a check out clerk in a grocery store and a difficult, complaining person comes through your line (who has poor PFC function) and you have good PFC function you are more likely to keep quiet or give a thoughtful response that helps the situation. If you have poor PFC function you are more likely to do or say something that will inflame the situation. The PFC helps you problem solve, see ahead of a situation and, through experience, pick between the most helpful alternatives. Effectively playing a game such as chess requires good PFC function.
This is also the part of the brain that helps you learn from mistakes. Good PFC function doesn’t that mean you won’t make mistakes. Rather, it generally means you won’t make the same mistake over and over. You are able to learn from the past and apply its lessons. For example, a student with good PFC function is likely to learn that if he or she starts a long term project early, there is more time for research and less anxiety over getting it done. A student with decreased PFC function doesn’t learn from past frustrations and may tend to put everything off until the last minute. Poor PFC function tends to be involved in people who have trouble learning from experience. They tend to make repetitive mistakes. Their actions are not based on experience, but rather on the moment, and immediate wants and needs.
The PFC is also involved with sustaining attention span (especially the dorsal lateral PFC). It helps you focus on important information while filtering out less significant thoughts and sensations. Attention span is required for short term memory and learning. The PFC, through its many connections within the brain, helps you keep on task and allows you to stay with a project until it is finished.
The PFC actually sends quieting signals to the limbic and sensory parts of the brain. When there is a need to focus, the PFC decreases the distracting input from other brain areas. It helps to inhibit or filter out distractions. When the PFC is underactive there is less of a filtering mechanism available and distractibility becomes common (this will be discussed in detail under attention deficit disorder).
The PFC is also the part of the brain that allows you to feel and express emotions; to feel happiness, sadness, joy, and love (especially the dorsal lateral PFC). It is different from the limbic system, which is a more primitive part of the brain. Even though the limbic system controls mood and libido, the prefrontal cortex is able to translate the feelings of the limbic system into recognizable feelings, emotions and words, such as love, passion or hate. Underactivity or damage in this part of the brain often leads to a decreased ability to express thoughts and feelings.
Thoughtfulness and impulse control is heavily influenced by the PFC. The ability to think through the consequences of behavior is essential to effective living, in nearly every aspect of human life. Common examples of the need for forethought include: choosing a good mate, interacting with customers, dealing with difficult children, spending money and driving on the freeway. Without proper function in this part of the brain it is difficult to act in consistent thoughtful ways and impulses can take over.
The PFC has many connections to the limbic system. It sends inhibitory messages that help keep it under control. It helps you “use your head along with your emotions.” When there is damage or underactivity in this part of the brain, especially on the left side, the PFC cannot appropriately inhibit the limbic system, causing an increased vulnerability to depression if the limbic system becomes overactive. A classic example of this problem occurs in people who have had left frontal lobe strokes. Sixty percent of patients with these strokes develop a major depression within a year.
When scientists study the prefrontal cortex with neuroimaging studies like SPECT, it is often done twice. Once in a resting state, and again during a concentration task. In evaluating brain function, it is important to look at a working brain. When the normal brain is challenged with a concentration task, such as math problems or sorting cards, the PFC increases in activity. Much like when you flex a muscle, the muscle produces more energy. In certain brain conditions, such as attention deficit disorder and schizophrenia, the prefrontal cortex decreases its activity in response to an intellectual challenge.
Problems of the PFC
Problems in the dorsal lateral prefrontal cortex often lead to decreased attention span, distractibility, impaired short term memory, decreased mental speed, apathy and decreased verbal expression. Problems in the inferior orbital cortex often lead to poor impulse control, mood control problems (due to its connects with the limbic system), decreased social skills and overall decreased control over behavior.
Overall, when there are problems in the PFC the organization of daily life becomes difficult and internal supervision goes awry. People with PFC problems often do things they later regret, exhibiting problems with impulse control. They also experience problems with attention span, distractibility, procrastination, poor judgment and problems expressing themselves. Test anxiety along with social anxiety also may be hallmarks of problems in the PFC. Situations that require concentration, impulse control and quick reactions are often hampered by PFC problems. Tests require concentration and the retrieval of information. Many people with PFC problems experience difficulties in test situations because they have trouble activating this part of the brain under stress, even if they have adequately prepared for the test. In a similar way, social situations require concentration, impulse control and dealing with uncertainty. Pfc deactivation often cause a person’s mind to “go blank” in conversation which lead to being uncomfortable in social situations.
There is more but so far it seems clear that the prefrontal cortex is a crucial element in our lives, for ours and others well being, just think for a minute of a good percentage of people in this world being able to do good use of it…
Ok so, I thought to start by studying one of the competences of the prefrontal cortex, Critical thinking, which I thought would be of great use to start training it. I started to wonder then about its real meaning, competences and effectiveness, and found this:
Critical thinking is self-guided, self-disciplined thinking which attempts to reason at the highest level of quality in a fair-minded way. People who think critically consistently attempt to live rationally, reasonably, empathically. They are keenly aware of the inherently flawed nature of human thinking when left unchecked.
They strive to diminish the power of their egocentric and sociocentric tendencies. They use the intellectual tools that critical thinking offers – concepts and principles that enable them to analyze, assess, and improve thinking. They work diligently to develop the intellectual virtues of intellectual integrity, intellectual humility, intellectual civility, intellectual empathy, intellectual sense of justice and confidence in reason.
They realize that no matter how skilled they are as thinkers, they can always improve their reasoning abilities and they will at times fall prey to mistakes in reasoning, human irrationality, prejudices, biases, distortions, uncritically accepted social rules and taboos, self-interest, and vested interest. They strive to improve the world in whatever ways they can and contribute to a more rational, civilized society. At the same time, they recognize the complexities often inherent in doing so.
They avoid thinking simplistically about complicated issues and strive to appropriately consider the rights and needs of relevant others. They recognize the complexities in developing as thinkers, and commit themselves to life-long practice toward self-improvement. They embody the Socratic principle: The unexamined life is not worth living, because they realize that many unexamined lives together result in an uncritical, unjust, dangerous world.
~ Linda Elder, September, 2007
I continued then searching more about what Dr.Linda Elder had to say about Critical thinking and found that She and Dr.Richard Paul had written some (in principle) very interesting books on the matter.
I am already half trough "The Art of Asking Essential Questions": _http://www.criticalthinking.org/store/products/the-art-of-asking-essential-questions/168 which I managed to find in Spanish, and must say that I’m fascinated by the amount of tools that we have available to put our minds to work, it is making me more aware of how Laura and Ark greatly use their minds, and how much effort it takes!
And so, Has anyone read them or found other sources on Critical Thinking that can be useful?