Positive and negative feedback?

Question

Does anyone know the difference between positive and negative feedback? i have test tomorrow l0l..helpp plz=)

okk i read the answerrss..im sorry yahoo put it in the wrong category..y do u guys have to be so like "wow ur stupid. BLAH BLAH BLAH.." im talking in terms of biology/living enviornment. Seriously, some of u ppl r so mean and arrogant. Remember..ten points=)) l0l thankks..

Answer 1

Negative feedback is how the body maintains homeostasis. With negative feedback if there is a change in something then there is a response to negate this response. Like the thermostat in your home. If you set the temp to 70 degrees, and the house say gets to 68 degrees then the furnace turns on and raises the temp back to 70. If the house gets say 72 the air cond. turns on and lowers the temp back to 70. This is bringing it back to a normal is what negative feedback is. This is how the body maintains say body temp. When you get too warm you sweat bringing the body temp back down., If you get cold you may shiver raising your body temp. With positive feedback when something occurs the body amplifies or makes it bigger. Take child birth when contractions begin, a hormone oxytocin, is released and that makes the contractions larger. This is positive feedback. I hope this helps explain this.

Answer 2

As usuall the assumed understanding of Earths energy budget is way off base, to make the statement: """"The analysis concludes "The existence of a strong and positive water-vapor feedback means that projected business-as-usual greenhouse-gas emissions over the next century are virtually guaranteed to produce warming of several degrees Celsius. The only way that will not happen is if a strong, negative, and currently unknown feedback is discovered somewhere in our climate system."""" is simply a naive and foolish statement. considering that the amount of water vapor in the global atmosphere is regulated by ocean surface temperature cycles such as the PDO. The radiative properties of earths atmosphere will be altered substantially more than even a doubling of atmospheric CO2. New research and computer models that model the PDO and the associated atmospheric radiative transfer changes that the PDO would modulate can account for 66% of the global warming over the 20th century. The planet has not warmed for several years, and 'SCIENCE' predicts that it will cool significantly for decades to come, that is just a few of my thoughts about water vapor as a feedback.

Answer 3

postive feedback...

wow! great! good work! You amaze me!
or You did a good job on coloring! Maybe you should make this color green to make it more livelier.


negative feedback....
How stupid of you!
You should have done this instead of doing blah-blah.


the point is, positive feedback builds on the person's strengths in able to help him achieve goals.

Negative feedback does the opposite. It destroys the persons esteem and trust in himself.

Student nurse? ;)

Answer 4

Positive feedback is meant to help people overcome whatever might be holding them back and it usually compliments the strengths of the person being evaluated.

Negative feedback is sometimes meant to harm people and to make them feel like they're untalented and worthless.

Answer 5

Why is this in STDs??? Positive feedback is rewarding someone for an approved behavior...negative feedback is punishing someone for an unapproved behavior..

Answer 6

Electrical ? psychology ? communication ?
Feedback , + and - , is used in many disciplines,
What are you asking about ?
And are you studying this as part of treatment for sex transmitted diseases ? ( you listed under STDs)