Operational definitions are at their most controversial in the field of psychology where intuitive concepts, such as intelligence need to be operationally defined before they become amenable to scientific investigation, for example, through processes such as IQ tests.
Ven (sign: VEN) is a global digital currency traded in international financial markets and originally used by members of a social network service, Hub Culture, to buy, share, and trade knowledge, goods, and services.
Looking for the definition of NPN? Find out what is the full meaning of NPN on Abbreviations.com! 'Non Protein Nitrogen' is one option -- get in to view more @ The Web's largest and most authoritative acronyms and abbreviations resource.