Operationalises two conceptually distinct dimensions of consumer innovativeness grounded in Midgley & Dowling (1978) and Hirschman (1980). CIJM captures the tendency to make adoption decisions without relying on others' prior experiences — reflecting independence from social influence in the innovation adoption process. CNS captures the hedonic and informational motivation to seek out new products and experiences. The two dimensions are near-orthogonal (r=–0.11 to 0.15) and should always be scored separately. Alpha consistently strong across three samples: CIJM 0.84–0.87, CNS 0.84–0.92. CNS predicts 'actualised novelty seeking' (path beta=0.40) and correlates negatively with age; CIJM predicts new product trial (path beta=0.19).
Manning, K.C., Bearden, W.O., & Madden, T.J. (1995). Consumer innovativeness and the adoption process. Journal of Consumer Psychology, 4(4), 329–345.
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