Which type of feedback loop causes a system to change further in the same direction?

A positive feedback loop is a process in a system where a change leads to a further change in the same direction, effectively amplifying the initial effect. This type of loop occurs when deviations from a certain norm trigger mechanisms that increase that deviation. For example, during childbirth, the release of oxytocin increases the intensity and frequency of contractions, which in turn stimulates more oxytocin release until the birth is complete. This characteristic of positive feedback loops distinguishes them from negative feedback loops, which typically act to stabilize a system by counteracting changes. Static and linear feedback loops do not represent common scientific concepts in terms of feedback mechanisms in biological or environmental systems.