An intelligence must meet several standard criteria before ii can be consid
ered scientifically legitimate. First, it should be capable of being operat
ionalized as a set of abilities. Second, it should meet certain correlation
al criteria: the abilities defined by the intelligence should form a relate
d set (i.e., be intercorrelated), and be related to pre-existing intelligen
ces, while also showing some unique variance. Third, the abilities of the i
ntelligence should develop with age and experience. In two studies, adults
(N = 503) and adolescents (N = 229) took a new, 12-subscale ability test of
emotional intelligence: the Multifactor Emotional intelligence Scale (MEIS
). The present studies show that emotional intelligence, as measured by the
MEIS, meets the above three classical criteria of a standard intelligence.