AP PSYCHOLOGY

Detailed explanation-1: -Positive feedback is amplifying or magnifying the change or output. The response effect is magnified so that it can occur much faster. In this form of feedback, the output of the system is enhanced. Conversely, in negative feedback, the output is decreased or inhibited.

Detailed explanation-2: -Positive feedback occurs to increase the change or output: the result of a reaction is amplified to make it occur more quickly. Negative feedback occurs to reduce the change or output: the result of a reaction is reduced to bring the system back to a stable state.

Detailed explanation-3: -Positive feedback mechanisms are rare. It amplifies changes rather than reversing them. The release of oxytocin from the posterior pituitary gland during labor is an example of positive feedback mechanism. Oxytocin stimulates the muscle contractions that push the baby through the birth canal.

Detailed explanation-4: -Both have the same components of a stimulus, sensor, control center, and effector; however, negative feedback loops work to prevent an excessive response to the stimulus, whereas positive feedback loops intensify the response until an end point is reached.