Programmer growth Chapter 30: do you really understand feedback?

Today I will introduce two concepts , Feedback effect and feedback loop .

Feedback effect

Feedback effect refers to the evaluation of activity results . It can strengthen the motivation of activities , Promote the work .

Feedback effect is particularly important in work . The year-end performance report of the company is over , You think it's remarkable . But this is just what you think . Reality may be different from what you think . In general, the boss may have the following three kinds of feedback ：

Zero order feedback ： The boss said nothing , Not even a word of affirmation and praise .

First level feedback ： Simply offer praise or criticism , such as ： fantastic , Great .

Secondary feedback ： Not only sincerely praised you , It also gives detailed suggestions for improvement .

The best feedback effect is the third , Not only gave a definite answer , It also gives new information .

Psychologist Brown further studied the feedback effect through experiments , It turns out that , Different feedback subjects and methods , The promotion of learning and work is also different , Generally speaking , Active feedback by yourself is better than feedback from others , The effect of feedback can be applied to various life scenes , Whether a person's work and family are harmonious is related to feedback .

No one likes to be ignorant , No one likes it, no feedback .

The thinking model of feedback ： Feedback loop

What is a feedback loop ？ Feedback loop refers to a closed loop formed by more than two causal chains connected end to end .

There are only two kinds of feedback loops , One is positive feedback loop and negative feedback loop . Positive feedback refers to self reinforcing behavior , The whole circuit can enhance the output , Will cause things to grow or die , And it's an accelerated feedback loop , I once wrote an article about ​ ​ Power law distribution ​​, Positive feedback is at work , For example, the more articles I write on official account , The more fans follow . More fans , The more I am motivated , More incentives , I write more articles , This is a positive feedback , Another example , The two men clashed , Passerby a scolded passerby B , Passerby B scolded passerby a , Then I added , Back and forth several times , The two men began to fight , This is an example of positive feedback , But this is only an example of negative effects .

Positive feedback does not mean positive benefit , It means to enhance the effect , The effect may be good , It can also be bad , In addition to the name of positive feedback , Others will use positive feedback loops , Strengthen the loop, constantly strengthen the loop, and so on .

Negative feedback and positive feedback are just the opposite , It refers to having self convergent behavior , The whole circuit can reduce the output , The circuit of keeping things stable , For example, the temperature regulation system of human body is a negative feedback loop , If the temperature is too low , The brain will make the muscles shake , Speed up blood circulation , Thus stimulating the temperature rise , If the body temperature is too high , It will make you sweat to lower your temperature , Similarly, nature is also a negative feedback loop , Only when the environment is relatively stable for a long time can life develop . If positive feedback is like a runaway Mustang , Negative feedback is like a bridle leading a horse , Let the horse not run too far , The same except for negative feedback , Other places are called using the regulating circuit , Keep the balance loop negative feedback loop, etc .

A perspective on feedback loop and an inspiration for me , The feedback loop thinking model tells us , Nothing exists alone , All things are interrelated . For reality 、 Complex problems , It is best to use the network formed by interconnected feedback loops to describe . For example, product managers who have just entered a certain industry , The first thing to do is to sort out the industrial chain , Although the industrial chain is only part of the feedback loop , But it has been able to help product managers have an overall understanding of the whole industry . In the process of combing the circuit , In addition to drawing the relationship chain , Another point is to determine the circuit type .