Tuesday, October 17, 2017



Another squirm about IQ

The Left hate the whole idea of IQ.  It offends against their absurd doctrine that all men are equal.  So when intelligence becomes a topic, they always do their best to denigrate and misrepresent it.  The article below arises from Trump's assertion that he has a higher IQ than Tillerson. It appeared in "LiveScience", which might as well be called "HalfDeadScience".

The whole aim of the article is to show that IQ score is not fixed and does not matter.  But in claiming those things they show how unscientific they are by not looking at the numbers.  Numbers are the inescapable tools of science.  And that matters.  Psychometricians are well aware that the correlations between different measures of ability are not perfect and that some situational factors can influence an IQ score.  But how strong are those influences?  Could the effect of situational factors be entirely trivial, for instance?

To answer that you have to look at the numbers that have emerged from research into IQ.  And they are revealing.  IQ tests are made up of a number of different types of puzzle that are not obviously related to one-another.  And the whole concept of IQ originated from the observation that some people are good at all sorts of puzzles that are not obviously related to one another.

So how strong is that effect?  When scores on the different tests are analysed a very strong first eigenvector arises, which shows that scores on all the different tests are strongly related to one-another.  Correlations between the various puzzles run as high as .70, which is a rare magnitude in psychological research.  So there is a single strong trait in existence that we call IQ and which tells us that a high scorer on an IQ test will be good at solving all sorts of problems.

So IQ is real and important.

What about the various influences described below that can influence an IQ score?  Again the numbers are instructive.  Nutrition, for instance, can have an effect.  A person eating a diet that is seriously deficient in important ways will get a reduced score -- but only by about 5 IQ points.  That is not negligible but it is mostly irrelevant in Western society.  Western diets generally do not harm IQ.  Reduced scores on dietary grounds are generally found in very poorly fed populations in India and Africa.  And IQs in Africa are so disastrously low that no feeding would bring them anywhere near European standards.

Let me look very briefly at some more of the influences trotted out below.  IQ correlates with Birth order.  Yes. It does appear to.  The research is not unanimous but that is probably because the effect is so small:  About 1 IQ point.

The Howard Gardner theory of "multiple intelligences" -- eight of them, would you believe? There is a very clear and simple demolition of the whole Gardner theory here -- which points out that the Gardner theory not only ignores the data but that its criteria for calling something "an intelligence" are so loose that sense of humour, sense of smell, musical ability, athletic ability etc could all be called "intelligences". By adopting similar rules I could say that all cats, dogs and horses are birds -- but that would still not make them so.

I could go on but will finish with one outright misrepresentation below.  An article titled "Self-Discipline Outdoes IQ in Predicting Academic Performance of Adolescents" is described below as showing that "IQ scores also change with the test taker's level of self-discipline and personal motivation and grit".  But the article did not show that.  It showed only that academic performance, not IQ, was influencible by grit etc.  That hard workers do better at school is hardly news but it does not vitiate the fact that High IQ scorers also perform well academically.

So the article below is an exercise in deception, not science


The IQ, or the intelligence quotient, is a measure of a person's mental age divided by their actual age, multiplied by 100. So, a person who is exactly as "mentally old" as one might expect for that individual's chronological age would score a perfectly average 100. People who deviate from that score in either direction are considered to be of above- or below-average intelligence. These scores can change with age and can fluctuate from one testing session to another, according to researchers.

But intelligence is a many-faceted beast. While it is colloquially associated with math and reasoning skills, psychologists assert that there are many kinds of intelligence, with Howard Gardner, a developmental psychologist at Harvard University, classifying seven distinct types, including bodily-kinesthetic, interpersonal, intrapersonal, musical, logical-mathematical, visual-spatial and linguistic.

Given that it's so hard to pin down exactly what intelligence is, the task of measuring it with a standardized test is particularly difficult, experts say. One of the standard IQ tests used today is called the Wechsler Adult Intelligence Scale (used for adults and older teens), which measures verbal and nonverbal cognitive skills, or as the psychologist who developed the test put it, the ability to "adapt and constructively solve problems in the environment."

Trump might not get the clear-cut result he's hoping for, since this test and others like it, including the Stanford-Binet test, don't present some unified quantity of a person's "smartness."

Test results are affected by several confounding variables, such as smoking habits, hours spent playing computer games and various aspects of one's personality, according to past research. IQ scores also change with the test taker's level of self-discipline and personal motivation and grit — all things that can change from testing session to testing session — according to a 2005 study that surveyed the IQ test results of 140 eighth-graders.

"Indeed, IQ tests are influenced by many factors," Cornell University developmental psychologist Stephen Ceci told Live Science. "For example, schooling affects IQ test performance," he added, explaining that for each year that a student falls short of finishing high school, there is a drop of between 1.8 and 4 IQ points compared to peers who did finish high school.

In Vietnam, Ceci explained, people who had a higher risk of being drafted stayed in school longer as a means to defer service compared to those with safer draft numbers. IQ testing revealed that those who stayed in school longer had higher scores — not because they were smarter, but because they had greater exposure to the conditions that would help them answer IQ test questions such as "who wrote Hamlet," Ceci said.

IQ test scores even correlate with birth order among siblings, according to two 2007 studies, as reported by The New York Times.

Therefore, IQ tests measure not just intelligence (however that is defined), but also the environment and context of one's life.

SOURCE

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Republicans Will Only Succeed if They ‘Get Behind the Trump Agenda’

Freedom Caucus Chairman Mark Meadows (R-NC) told Breitbart News that Republicans will only succeed in the midterm elections if “they get behind the Trump agenda.”

The congressman said that the Freedom Caucus remains committed to passing a dynamic tax reform package for middle-class families as well as repealing and replacing Obamacare. Meadows also cheered the Environmental Protection Agency’s proposed repeal of Obama’s Clean Power Plan. An EPA analysis revealed that repealing the Clean Power Plan will save roughly $33 billion in compliance costs in 2030.

House Freedom Caucus Chairman Mark Meadows (R-NC) cheered the EPA’s repeal of the Clean Power Plan. Meadows said, “Well it’s a good day for businesses across the country and not just in coal country when we really look at the compliance costs and economics of compliance a lot of times the cost benefits that was done under the previous administration would take credit for things that the rules and regulations accounted for and yet really didn’t take consideration for the cost and emphasize of that particular administrative action. I look at this repeal as a welcome day not just for coal country but all businesses in making sure that we have proper accounting for the cost-benefit analysis.”

Meadows added, “We should really focus on an American First agenda, and these climate pacts and climate regulations have been designed to not necessarily give American workers and the American environment a head start. It really gives our competition a greater ability to compete internationally and disadvantage American companies. I look forward to a reset that still emphasizes clean air and clean water.”

Meadows told Breitbart News that he remains optimistic about Congress’ ability to pass a tax reform package.

One thing that Washington D.C. does not do well is cut spending. We have to get the economy going again and getting tax cuts to wage earners and make sure that our businesses are competitive again. I’m optimistic that despite the rhetoric that we’re hearing, we’re going to be deliver finally on a major campaign promise that the president made to the American people, and that is to put more money back in Americans’ pockets.” Meadows said. “It is critically important that we deliver on tax reform. I believe it is bold and aggressive it may increase the deficit in the short-run, but over the long-term, the economic growth and the power of unleashing economic power of the American worker will certainly help us balance our budgets that Congress has never been able to do with just cutting the budget and limit the spending.

The House Freedom Caucus chairman then revealed that he and Rep. Jim Jordan (R-OH) will try to find Democrats to work with and who want to pass a tax reform package. The North Carolina congressman explained, “I can tell you that Jim Jordan and I are working to identify a number of Democrats in the House and the Senate to work with that will truly tax reform bipartisan which will put more money in the middle-income wage earner’s pockets. This should be a bipartisan topic. I want to make sure that we have a tax code that makes sure that everyone benefits, including those in poverty and those middle-income wage earners and those that have already lived the American dream as well as making sure that everyone can receive the benefits of a robust economy and not just the select few.”

President Trump worked with Sen. Rand Paul (R-KY) on an executive action that would expand Association Health Plans (AHPs) that would allow small groups, small businesses, and individuals to band together to create their own health insurance pools.

Chairman Meadows cheered Sen. Pauls’ initiative to lower Americans’ health care costs. Meadows told Breitbart News:

Rand Paul has done a very good job of focusing on association plans, and that goes back for eight or nine months. It has been my belief that since we did not get it done through the legislative initiatives that the president through the rulemaking authority that exists under the Affordable Care Act can put forth the ability for associations to provide insurance policy. It will put down real pressure to bring down premiums I applaud the effort and fully support it.

I will tell you that the president is serious about making sure that premiums get lowered so whether it is executive action on association plans or other executive actions, this administration continues to contemplate other actions as a backup in case Congress failed on repeal and replacement efforts.

Breitbart News reported on the “league of extraordinary candidates,” which consists of populist Republican candidates who remain committed to accomplishing the president’s agenda. Meadows argued that the only Republican candidates that will succeed in the midterm elections are those that “are willing to get behind the Trump agenda.”

Meadow told Breitbart News:

The fundamental question for Republican running all across the country is: are you going to stand with the American people like the president campaigned on and won on November 8? Or are you going to just talk about standing with the American people? The American voter is not going to accept talk any longer. It’s time to show the real proof of each candidate is made of and how they will fulfill that promise.

I think that the anger and the frustration that is prevalent still on the main streets across America will have a profound effect on the midterm elections and Republicans will only succeed if they get behind the Trump agenda.

Meadows explained that the Freedom Caucus remains committed to passing tax reform and passing an Obamacare repeal package. Meadows told Breitbart News that some Freedom Caucus members continue to look towards attaching an Obamacare repeal bill in must-pass legislation. Meadows said, “Well we’re obviously focused on tax reform, and we got to push even harder for a repeal and replacement effort, and there’s a number of us that are working on other ways to make sure that we attach repeal bills to must-pass legislation. Another emphasis for the Freedom Caucus is trying to support the president and identifying those regulations that have to be rolled back.”

Meadows concluded, “It’s all about representing the forgotten men and women, to make sure that they have a voice and members of the Freedom Caucus take that very seriously.”

SOURCE 

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For more blog postings from me, see  TONGUE-TIED, EDUCATION WATCH INTERNATIONAL, GREENIE WATCHPOLITICAL CORRECTNESS WATCH, AUSTRALIAN POLITICS, and Paralipomena (Occasionally updated),  a Coral reef compendium and an IQ compendium. (Both updated as news items come in).  GUN WATCH is now mainly put together by Dean Weingarten. I also put up occasional updates on my Personal blog and each day I gather together my most substantial current writings on THE PSYCHOLOGIST.

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