theory predicts how and when we detect the presence of a faint stimulus. Assumes that there is no single absolute threshold and that detection depends partly on a person’s experience, expectations, motivation, and level of fatigue.

Signal detection theory

Explanation:

Signal detection theory predicts the relationship of how well a signal is detected and the psychological state of the observer. This theory evaluates how and when the presence of a faint stimulus ("signal") amid background stimulation ("noise") is detected. Assumes that there is no single absolute threshold and that detection depends partly on a person's experience, expectations, motivation, and level of fatigue

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.