Neuroscience
Students were presented with two, three or four names, at a time, from the Sunday Times Rich List and asked to indicate in each case who was the richest or poorest person in each grouping. Now Caren Frosch and colleagues have shown that, in these circumstances, knowing who fewer of the people are can actually lead to superior performance - a kind of ignorance-based wisdom.
How can this be? The answer comes from Gerd Gigerenzer's work on "fast and frugal" heuristics, which are like decision-making short-cuts.
In this case, the students used the recognisability of the names presented to them as an indicator of their wealth. They did this intuitively and it turns out to be an effective cue to use. Recognisability does indeed correlate well with wealth - the researchers know this because after the study, they found out which names from the list the students recognised and cross-checked this with the wealth of the people on the Rich List.
But imagine those cases when a student recognises all the names in a given grouping - now their tactic of using recognisability as a cue for wealth is impossible to apply and that's why less knowledge can sometimes be more when it comes to finding the right answer.
Frosch and colleagues' analysis of the students' performance confirmed this. For example, when choosing the richest of four people, students performed better when they knew just one or two of the names compared with when they knew all four. There were similar findings for the poorest question, with students performing better when they recognised two out of three names compared with recognising all three.
The researchers caution that this 'less-is-more' rule to knowledge only applies in certain circumstances. In this case, when the students knew all two, three or four names shown to them, their knowledge about those people tended to be superficial. "A little learning is dangerous thing, but only when learning increases breadth at the expense of depth," the researchers wrote.
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Frosch, C.A., Beaman, C.P. & McCloy, R. (2007). A little learning is a dangerous thing: An experimental demonstration of ignorance-driven inference. The Quarterly Journal of Experimental Psychology, 60, 1329-1336.
Post written by Christian Jarrett (@psych_writer) for the BPS Research Digest.
Image credit: if you own the copyright on the image, please get in touch using comments.
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Neuroscience
How ignorance can lead to the right answer
Students were presented with two, three or four names, at a time, from the Sunday Times Rich List and asked to indicate in each case who was the richest or poorest person in each grouping. Now Caren Frosch and colleagues have shown that, in these circumstances, knowing who fewer of the people are can actually lead to superior performance - a kind of ignorance-based wisdom.How can this be? The answer comes from Gerd Gigerenzer's work on "fast and frugal" heuristics, which are like decision-making short-cuts.
In this case, the students used the recognisability of the names presented to them as an indicator of their wealth. They did this intuitively and it turns out to be an effective cue to use. Recognisability does indeed correlate well with wealth - the researchers know this because after the study, they found out which names from the list the students recognised and cross-checked this with the wealth of the people on the Rich List.
But imagine those cases when a student recognises all the names in a given grouping - now their tactic of using recognisability as a cue for wealth is impossible to apply and that's why less knowledge can sometimes be more when it comes to finding the right answer.
Frosch and colleagues' analysis of the students' performance confirmed this. For example, when choosing the richest of four people, students performed better when they knew just one or two of the names compared with when they knew all four. There were similar findings for the poorest question, with students performing better when they recognised two out of three names compared with recognising all three.
The researchers caution that this 'less-is-more' rule to knowledge only applies in certain circumstances. In this case, when the students knew all two, three or four names shown to them, their knowledge about those people tended to be superficial. "A little learning is dangerous thing, but only when learning increases breadth at the expense of depth," the researchers wrote.
_________________________________
Frosch, C.A., Beaman, C.P. & McCloy, R. (2007). A little learning is a dangerous thing: An experimental demonstration of ignorance-driven inference. The Quarterly Journal of Experimental Psychology, 60, 1329-1336.
Post written by Christian Jarrett (@psych_writer) for the BPS Research Digest.
Image credit: if you own the copyright on the image, please get in touch using comments.
- Affection For Our Own Names And Initials Can Lead Us To Failure
Our tendency to like our own names and initials - sometimes referred to as a form of implicit egotism - can have relatively trivial consequences, such that Britney will be more likely to move to Brighton than Sheffield, and Jack more likely to buy a Jaguar...
- Anyone Remember What Chandler's Job Was In The Sitcom Friends?
It can be so embarrassing when you bump into a person you haven’t seen for years – you recognise them, you even remember lots of things about them like their job…but you just can’t quite recall their name. This phenomenon has been replicated in...
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"'Oh! it is only a novel!' or, in short, only some work in which the most thorough knowledge of human nature, the happiest delineation of its varieties, the liveliest effusion of wit and humour are to be conveyed to the world in the best chosen...
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When it comes to predicting short-term share price fluctuations, it appears a simple psychological explanation has succeeded where countless complex economic theories have failed. The human tendency to respond positively to easily processed information...
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Not thinking about a problem for a while doesn’t just give you a fresh perspective when you come back to it. It also allows your more creative unconscious to get to work as it “…ventures out to the dark and dusty nooks and crannies of the mind”....