Harvard Business Review - Let Me Give You Some Advice
In studies that Francesca Gino*conducted with Don Moore of Carnegie Mellon University, she found that people tend to overvalue advice when the
problem they’re addressing is hard and to undervalue it when the
problem is easy.
In Francesca and Don’s experiments, subjects were asked to guess the weight of people in various pictures, some of which were in focus (making guessing easier) and some of which were blurred (complicating the guesswork).
For each picture, subjects guessed twice: the first time without advice and the second time with input from another, randomly chosen participant. When the pictures were in focus, subjects tended to discount the advice; apparently, they were confident in their ability to guess correctly. When the pictures were blurry, subjects leaned heavily on the advice of others and seemed less sure about their initial opinion.
Because they misjudged the value of the advice they received – consistently overvaluing or undervaluing it depending on the difficulty of the problem – our subjects made suboptimal guesses overall. They would have done better if they’d considered the advice equally, and to a moderate degree, on both hard and easy tasks.
* postdoctoral fellow at Harvard Business School in Boston.
Source: Harvard Business Review
problem they’re addressing is hard and to undervalue it when the
problem is easy.
In Francesca and Don’s experiments, subjects were asked to guess the weight of people in various pictures, some of which were in focus (making guessing easier) and some of which were blurred (complicating the guesswork).
For each picture, subjects guessed twice: the first time without advice and the second time with input from another, randomly chosen participant. When the pictures were in focus, subjects tended to discount the advice; apparently, they were confident in their ability to guess correctly. When the pictures were blurry, subjects leaned heavily on the advice of others and seemed less sure about their initial opinion.
Because they misjudged the value of the advice they received – consistently overvaluing or undervaluing it depending on the difficulty of the problem – our subjects made suboptimal guesses overall. They would have done better if they’d considered the advice equally, and to a moderate degree, on both hard and easy tasks.
* postdoctoral fellow at Harvard Business School in Boston.
Source: Harvard Business Review
2 Comments:
Another advice-related bias they’ve found compels people to overvalue
advice that they pay for. In one study Francesca conducted, subjects answered different sets of questions about American history. Before answering some of the questions, they could get advice on the correct answer from another subject whom they knew was no more expert than they were.
In one version of the experiment, people could get advice for free, while in another version, they paid for it. When they paid for advice, people tended to give it more credence than it warranted—driven, I suspect, by a combination of sunk-cost bias and the nearly instinctual belief that cost and quality are linked.
Source: Harvard Business Review
QUEM é o "Vistalegre" para dar estes conselhos!!! Não vou seguir nenhuma destas sugestões!!!!!
;-)
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