See Also: pleasure-pain principle(medicine)
pain-pleasure principle(medicine)
pleasure principle(medicine)
Revenue principle or realization principle(finance)
pleasure(dictionary)
pleasure(2)(dictionary)
Pleasure(medicine)
pleasure(1)(dictionary)
pleasure boat(dictionary)
Fear of pleasure(health)

Thoracentesis (health) and pain-pleasure principle (medicine)


Thoracentesis (health)


Puncture of the pleural cavity.







pain-pleasure principle (medicine)


pain-pleasure principle


A psychoanalytic concept that, in a human's psychic functioning, he/she tends to seek pleasure and avoid pain; a term borrowed by experimental psychology to denote the same tendency of an animal in a learning situation.

Synonym: pleasure principle.