Thursday, April 2, 2009

Cognitive Biases

Cognitive bias is a distortion in the way we perceive reality. No matter how clever we are, we can't get rid of cognitive biases. They're thought to be instances of evolved mental behaviour.



Here's a list of the most common ones:
  • Bandwagon effect: we often do and believe things because many other people do and believe the same things... It's related to groupthink, herd behaviour, and manias.
  • Confirmation bias: a tendency to search for or interpret information in a way that confirms one's preconceptions, leading to statistical errors.
  • Hindsight bias: the inclination to see events that have occurred as more predictable than they in fact were before they took place. It's related to believing in prophecies..
  • Hawthorne effect: the tendency of people to perform or perceive differently when they know that they are being observed. Problem when it comes to research...
  • Anchoring: describes the common human tendency to rely too heavily, or "anchor," on one trait or piece of information when making decisions.
  • Exposure effect: (also known as the mere exposure effect) a psychological phenomenon by which people tend to develop a preference for things merely because they are familiar with them.
  • Self-fulfilling prophecy: a prediction that directly or indirectly causes itself to become true, by the very terms of the prophecy itself, due to positive feedback between belief and behaviour.
  • Choice-supportive bias: the tendency to remember one’s choices as better than they actually were.
  • Post-purchase rationalization: the tendency to persuade oneself through rational argument that a purchase was a good value.
  • Fundamental attribution error: the tendency for people to over-emphasize personality-based explanations for behaviours observed in others while under-emphasizing the role and power of situational influences on the same behaviour. For example: I passed the test because I'm clever! He was successful due to good luck!

Tuesday, February 24, 2009

10 Psychology Jokes!

1. What happens when a psychiatrist and a hooker spend the night together? In the morning each of them says: "120 dollars, please."


2.Why is psychoanalysis a lot quicker for a man then for a women?
Because when it's time to go back to childhood, a man is already there.

3. When the new patient was settled comfortably on the couch, the physiatrist began his therapy session, "I'm not aware of your problem," the doctor said. "So perhaps, you should start at the very beginning."
"Of course." replied the patient. "In the beginning, I created the Heavens and the Earth..."

4.What's the difference between a psychologist and a magician?
A psychologist pulls habits out of rats!

5. I don't suffer from insanity, I enjoy every minute.

6. I used to be indecisive. Now I'm not sure

7. One behaviorist to another after lovemaking:
"Darling, that was wonderful for you. How was it for me?"

8. Doctor, Doctor, I think I'm a cat.
How long has this been going on?
Oh, since I was a kitten!

9. In a psychiatrist's waiting room two patients are having a conversation. One says to the other, "Why are you here?"
The second answers, "I'm Napoleon, so the doctor told me to come here."
The first is curious and asks, "How do you know that you're Napoleon?"
The second responds, "God told me I was."
At this point, a patient on the other side of the room shouts, "No I Didn't!"

10. A man goes to see his psychiatrist. He says, "Doctor, I've been having suicidal tendencies. What should I do?"
The psychiatrist replies, "Pay your bill today."

Thursday, February 5, 2009

ASIMO the robot!

ASIMO is the name of the famous humanoid robot created by HONDA. It's one of the most advanced of its kind as it can do a variety of tasks and has many capabilities. The new model is able to recognize and memorize objects interacting with the environment around him like a baby. It seems that scientists think that only machines capable of learning have a chance of showing signs of "intelligence".

ASIMO can run (up to 6km/h), climb ladders, answer in small phrases or nod when asked specific questions, avoid obstacles, contact an orchestra, interact with objects (deliver a tray etc), recognize gestures, postures and faces and distinguish faces... Sounds impressive, doesn't it? Well, not if you expect to see robots attacking men - I don't think that's going to happen any time soon.

Here's a video of ASIMO from James May's programme
(James May's Big Ideas):