Our Minds Are Black Boxes – Even to Ourselves

black_box

The stories we weave about our mental processes are logically appealing but fatally flawed more often than we’d like to think.

We all have intuitive theories about how our own and other people’s minds work. Unfortunately psychological research demonstrates that these theories are often wrong. The gulf between how we think our minds work and how they actually work is sometimes so huge it’s laughable.

This couldn’t be clearer than when we are trying to make judgements about other people. Research in this area shows that factors we think are important often play no role, while factors we think aren’t important actually make all the difference.

What do you think of Jill?

In their classic social psychology study Nisbett and Bellows (1977) asked 128 participants to judge whether someone called Jill had the personality required to work in a crisis centre. ‘Jill’, however, was a creation of the experimenters, conjured up in the minds of participants by 3 pages of information: an interview transcript, answers to a questionnaire and a letter of recommendation.

Most of the information presented to participants about Jill was the same except for 5 crucial factors which were varied between participants. They were told that:

  • She has an attractive appearance (or told nothing about her appearance)
  • Her academic credentials are good (or told nothing about her academic credentials)
  • Some years before Jill had had a car accident (or not)
  • She accidentally spilled coffee on the interviewer’s desk (or not told this)
  • Jill would meet the participants in the near future (or they would meet a different applicant)

This meant that each participant saw a different combination of these facts in Jill’s profile. After reading it they were asked to judge Jill on how much:

  • sympathy she would show towards others,
  • the participant themselves liked her,
  • flexibility she would show in solving problems,
  • intelligence she had.

After this participants were asked to rate how much each of the above ‘crucial factors’ had been influential in their rating on a scale of 1 to 7. What the experimenters were interested in seeing was whether people’s judgements were controlled by factors they themselves thought they were. So, do people have clear insight into how their own minds work?

Poor judgement

For ratings of sympathy, likeability and flexibility the participants turned out to be surprisingly poor at predicting the actual effect that each of the above 5 factors would have on their own judgements. On more than half the judgements people didn’t even get the direction of the effect right.

For example participants thought if Jill was good-looking it would make them think others were more sympathetic to her. In fact it had the opposite effect, if she was described as good-looking participants actually thought others would find her less sympathetic.

They made similar mistakes on likeability and flexibility. Participants thought that the car accident would make Jill more likeable, in fact it made her less likeable. They also thought the coffee-spilling incident would make her seem less flexible in solving problems; in fact those same participants who were told about the spillage actually rated her as more flexible. And so on.

Even the judgements that were in the correct direction were frequently wrong in their extent. For example participants were right to predict that anticipating a meeting with Jill would make her seem more sympathetic, but vastly underestimated the effect’s size (by a factor of 8!).

black_box2

The interesting thing is that although participants were wrong, they were all wrong to the same degree and in the same direction. In other words all the participants probably used similar ‘common sense’ theories about how the mind works, many of which were wrong. This suggests most of us share the same misapprehensions about the way the mind works which are culturally available or we have worked out on the basis of common sense.

The only category of judgements in which participants were accurate was intelligence. Here their predictions about the effect of each of the 5 factors on their ratings of Jill’s intelligence were pretty much spot on. Participants thought they would rely on her academic record to assess her intelligence and, indeed, they did. Their accuracy is probably because the culturally available tools for assessing intelligence were accurate in the context of this study.

The perils of introspection

Aside from intelligence, though, this study shows how poor we are at understanding what factors will affect our judgement of another’s personality. People may know what they like, but they often don’t know why they like it. This pattern is repeated in many other studies demonstrating our lack of insight into who we’re attracted to, how we solve problems and where our ideas come from (covered previously on PsyBlog in the hidden workings of the mind).

These types of findings are a real challenge to psychologists. After all, how can the intricate workings of the mind be unpicked when their owners have so little insight? They are also a challenge to our everyday explanations for the most important decisions in our lives, like choosing how we spend our days and who we spend them with. The stories we weave about ourselves are logically appealing but fatally flawed more often than we’d like to think.



Want to understand your mind?

Get FREE email updates from PsyBlog.

About the author


Dr Jeremy Dean is a psychologist and the author of PsyBlog. His latest book is "Making Habits, Breaking Habits: How to Make Changes That Stick". You can follow PsyBlog by email, by RSS feed, on Twitter and Google+.

Published: 30 November 2009

Text: © All rights reserved.

Images: Creative Commons License