Dihydroergotamine is an ergot medicine. It works by narrowing the blood vessels around the brain. Dihydroergotamine nasal is used to a treat migraine headache attack. Dihydroergotamine nasal will only treat a headache that has already begun.
The Definition of Positive Psychology. Positive psychology is a science of positive aspects of human life, such as happiness, well-being and flourishing. âscientific study of optimal human functioning [that] aims to discover and promote the factors that allow individuals and communities to thriveâ.
Positive reinforcement. Positive reinforcement occurs when a desirable event or stimulus is presented as a consequence of a behavior and the behavior increases. A positive reinforcer is a stimulus event for which the animal will work in order to acquire it. Example: Whenever a rat presses a button, it gets a treat.