Tag Archives: Psychology

Discussion #19 – “You’re Not My Type” – the Science and Ethics of Personality Testing

We’re joined this week by musician, writer and director Polash Larsen for a critical look at the world of “personality testing” and in particular the famous Myers-Briggs Type Indicator which categorizes people (“personalities”) as four-letter codes (e.g. ENTP).

If you like Myers-Briggs, I should warn you that we don’t (much). As gentlemen scientists, we’re not fond of any scheme that seeks to linearize a complex, non-linear system – especially when that scheme is then used as a guide for how to treat other people.

Calling someone (or yourself) an ENTP is fine as a game, but claiming it’s somehow scientific is wrong. It’s arbitrary and made up. And then using it to pre-judge people – well, that raises ethical questions.

chimpanzeeENTPs on the prowl

Personality testing and Myers Briggs in particular is very popular in certain circles (e.g. recruiting). The assumption that people have unified “personalities” and that these don’t change over time is common enough to have become a part of our language (she’s not my “type”). There’s something comforting about labelling other people and yourself.

Polash puts forward a plausible hypothesis about this – do we just label ourselves to be who we want to be?

[By the way, the soundtrack for today’s podcast is Paula Abdul’s Opposites Attract. Don’t ask us to explain – just go with us on this one.]

She was our type (in 1989)

Update Monday 2/11: BTW Paula Abdul sends her love! (no, really)

Horoscopes and fortune telling are fun, but we don’t hire and fire based on them (although, see footnote about Raymond Domenach below). By putting people in boxes, we deny them the opportunity (the right!) to surprise us. Labelling people has a painful history – let’s just be careful.

Special note: we should really issue a (mild) bad language warning for this week 🙂

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1Wikipedia entry for the Myers-Briggs Type Indicator.

2Uncovering the Secret History of Myers-Briggs – excellent piece by Merve Emre.

3Stephen Jay Gould gives a wonderful example of reification in a devastating critique of IQ testing and the concept of intelligence in A Mismeasure of Man

4Explaining the term “bogan” to a non-Australian is always difficult. Maybe the best way is to direct the interested reader to Things Bogans Like.

5The French soccer team was chosen using psychology (no Scorpios!) Raymond Domenach Looks to the Stars

6If you want to find out more about moral psychology (and chickens) check out this page.

Discussion #10 – The Science (and Art) of Making Mistakes

Everyone makes mistakes so why can’t you? – Big Bird, Sesame Street

Life is all about making mistakes. As we age, interrogating our own personal histories for mistakes yields more and more useful lessons, for those who wish to go through the exercise (it’s painful to do so). Whether it is in a performance review at work, on stage, in sport or just a quiet reflective moment at home, there is nothing quite as fruitful as constructively inspecting your mistakes and learning from them.

Mistakes are information wrapped in pain. They seem to be very good at compressing a lot of information into a small package. If you think of adaptation and evolution as an information processing system, then mistakes (errors, evolutionary dead-ends) are the primary way to glean information about the environment for the system.

In tonight’s discussion, we start with personal anecdotes that show the same quality – mistakes we have made that have become touchpoints for our own lives. Mistakes which have become something much bigger and much more positive.

539w

What would the world be like if no one ever made a mistake? What would a universe without error look like? Would evolutionary processes grind to a halt? Could we ever have got out of the primordial soup without our propensity to make errors?

But then again what is a mistake? If something was a good idea “at the time”, it only become a mistake later in time. This binary judgement (mistake/not a mistake) cannot be applied to the event, but only to the complete system in time and space (action + time + consequence). And even then, whether or not something was ‘wrong’ depends a lot on your frame of reference as an observer.

2014-06-28 21_56_13-Mistake on Dilbert.com

Our culture is schizophrenic about mistakes. We pay lip service to the ancient ideas of empiricism and learning by “trial and error”, but our world is theory driven and in love with optimization, which implies the removal of redundancy and error. Our default position is to design our lives in such a way as to minimize our opportunities for making mistakes.

But you have to do it wrong to do it right. To learn what not to do. A life/world without error is dead, boring and sterile.

As Gentlemen Scientists we have made more than their share of mistakes. But mistakes plus attention equal learning. Perhaps a good life is not making less mistakes but always making new mistakes. Plus being aware of your fallibility – having the courage to say “I was/could be wrong”.


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1On Making Mistakes, Scientific America, 20th February 2014 – “Once you ask a scientist to stop making mistakes you stop him or her from discovering.”

2How Mistakes Can Make You Smarter, Psychology Today – “”View decisions as experiments””

3Impostor syndrome – a psychological phenomenon in which people are unable to internalize their accomplishments. Despite external evidence of their competence, those with the syndrome remain convinced that they are frauds.

4 – I love this anecdote from Prosunjit Biswas about cooking a Bengali dish called ‘mishti doi’ – he had to get it wrong in a high profile situation before he really learnt what not to do.

5Dennett says here that “sometimes you don’t just want to risk making mistakes; you actually want to make them — if only to give you something clear and detailed to fix.”

6The Black Swan – by Nicholas Nassim Taleb

7When Life Was Odd – Discover Magazine

8Imagine a spider catching flies. If the spider always gets his prey and never fails to catch a fly, would that mean that spiders flourish or would that mean that eventually spiders die out. Do we need mistakes to grow and flourish. Are errors the food of life.

9The Meaning in Mistakes – about musicians and mistakes

Discussion #9 – Constructor Theory, Meta-Laws and the Face of God

[Today’s discussion is about Constructor Theory as proposed by David Deutsch. The original 2012 paper can be found here .]

A recent article in Scientific American introduced us to the ideas of David Deutsch and his Constructor Theory. Constructor Theory seeks to formulate “meta-laws” which sit “above” the laws of physics and determine them. They would do this by describing what may and may not (i.e. is forbidden to) happen, rather than trying to explain what will happen. Deutsch proposes that such a “meta” framework may be the way to unify the quantum and classical models of physics.

Deutsch is known as a pioneer of Quantum Computation, but this theory of his is speculative and not well known. It has its detractors, such as a this particularly abusive young physicist from the Czech Republic. But Deutsch’s ideas got us thinking here at Gentlemen Scientists HQ and set us off on a rambling, semi-informed conversation.

The thing is, we love the “meta”. Meta laws are fascinating because they hold out the promise of deeper understanding and unification. Understanding and control at a meta-level is stable over time than first-level control and survives the unexpected. Meta cognition, for example – the ability to reflect on one’s own patterns of thinking and behaviour – leads to better strategies for living under conditions of uncertainty.

However, once you start up the “meta-” ladder, how do you stop? Are there meta-meta-laws, or meta-meta-meta-laws? And when you do stop, you’re still left with the question – who designed the metaN law that you are left with? You’re still left looking at the “Face of God”.

Martian_face_viking_rotatedThe Face of God on Mars, as photographed by NASA (the Cydonia region on Mars)

So this approach is no magic bullet. In a way, the Constructor Theory is a deliberate lowering of our ambitions. Our tendency is to want to predict, and we judge our scientific models by their predictive power. But if we shift our focus from what will happen to simply trying to write down what will never happen, and then following such an exercise to its logical conclusion, we may be surprised to find just how much “drops out”(this seems to be what happened with Deutsch – he ended up with results that a remniscent of open problems in quantum mechanics).

If it makes us feel better, we can say that we are “deferring” the question of working out the “laws” while we explore the “meta-laws” first. Will it turn out that we never actually need to go to the “laws” in the end, because the “meta-” understanding will give us what we need? Counter-intuitively we might get a deeper understanding by trying to understand “less”.

Slight tangent: it got us thinking about our cognitive biases. When we look at network graphs, we concentrate on the nodes, not the edges. We put people as records into our databases, but not the relationships between people4. We see things, and we try to describe the things, but we don’t think as much about the things that make things or the things that connect things.

diagramCrude analogy with a network graph. Usually we like to think about the nodes N of the graph, but for a connected graph we could work with the edges A only and ignore the nodes altogether without losing any clarity or completeness of our model. We could even derive second order measures B based on the edges, such as e.g. relative sizes of adjacent edges. The resulting set of “meta”-edges would no longer fully specify a single graph but a whole family (“universe”) of possible graphs.

Before we get too far into our own navels, however, we do end up with a couple of concrete lines of enquiry. Deutsch’s work may be crackpot, speculative or revolutionary – or anywhere in between – but we feel encouraged to follow the same process when thinking about people and memes. Centuries of efforts to codify laws about people and communication have met with limited success in our opinion (sorry, social scientists).

So is it time to take a meta view and develop some meta-laws about what people don’t do instead? For example, we could imagine that a simple biological imperative make it (almost) impossible for us to truly believe in the imminence of our own death. What happens if we represent some of these basic assumption and construct ‘laws” from them? Could we construct a better social science that way? We’re excited about that possibility and are thinking of some simple computer simulations to explore these ideas further.


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1A Meta-Law to Rule Them All in Scientific American, May 26th 2014.

2Constructor Theory, David Deutsch 2012.

3An interesting and angry/abusive rebuttal of constructor theory can be found at
Constructor theory: Deutsch and Marletto are just vacuously bullšiting

4I had a recent conversation with a database expert and data archivist where we discussed the fact that we rarely design databases to represent the relationships between people, instead representing the people themselves. Kind of like representing the nodes of a graph but ignoring the edges. Although I am sure that sites such as LinkedIn have data structures that are doing that in some way. I wonder what would happen if we completely (and counter-intuitively) “ignored” the people themselves and only represented the relationships. People would still exist but only as an “inferred” property of the system.

5It’s Perfectly Normal to See Jesus In Toast, Say Study – TIME Magazine

Discussion #8 – Memes, Psychology and Religion – Are we better than we used to be?

This week we welcome John Hanly, our latest guest on the audio blog who has a special personal connection to The Gentlemen Scientists – he is Brian’s father! John has had a long, varied and fascinating career as a Catholic priest in training, a psychologist, businessman and consultant and writer – a true polymath. Tonight he joins us and applies his formidable intellect to questions of memetics, psychology, religion and ethics.

Like many of us, John has a keen and active interest in both science and religion. As the new century brings exciting cross-collaborative developments (such the scientific study of meditation), these also bring new opportunities for us to reconcile what has previously seemed incompatible. The Gentlemen Scientists believe that rambling conversations such as this week’s discussion are more and more the need of the hour.

Along the way we discuss why childhood traumas can so deeply affect adult life, how cognitive behaviour therapy (CBT) works, issues of determinism and free will; Dawkin’s definition of the “meme”, the mechanisms of “cultural transmission” and why memetics hasn’t contributed serious results to science; how Buddhist adepts modify their brains to achieve detachment, social learning theory and speculations on why advertising works.

Lord_of_the_FliesImage courtesy catholicvote.org

And we are not afraid of asking the big questions – we finish up by considering the idea of “moral progress” – are we morally and ethically better off as a human society than we used to be – or are we, as in The Lord of the Flies, just savages in slacks?


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1John Conway’s Game of Life is the most famous example of a class of mathematical model systems called cellular automata. It exhibits highly complex and unpredictable emergent behaviours from a set of trivially simple rules.

2This page on Encyclopedia Britannica has a good summary of epigenetics, the modification of gene expression by environment. Epigenetic effects have become better understood in recent years and have modified our views on the mechanisms that drive genetic inheritance.

3The amygdala is an ancient structure within the limbic system which integrates sensory and visceral inputs in time.

4Research with Buddhist monks was done at the University Wiscosin-Madison and reported in the book ‘Happiness’ by Matthieu Ricard. A related talk can be found on TED Talks.

5Explanation of Jung’s theory of archetypes.

6Anti-drink-driving campaigns in Australia run bt the Transport Accident Commission (TAC) have been enormously succesful over the last two decades, significantly reducing Australia’s road toll.

7Donald Rumsfeld’s famous remarks about “unknown unknowns” – although this has long been a subject of ridicule, his argument is excellent and correct.

8“The Surprising Decline of Violence” – Steven Pinker