Of or relating to the theories of Melanin Klein, 1882-1960, a German pioneer in child psychology who emphasized infant sexuality and argued that the psychoanalytic technique could be applied to very young children.

克莱茵理论(梅兰尼．克莱茵[1882-1960]是德国儿童心理学的先驱，他强调幼儿的性行为，认为精神分析的技术可以适用于年幼的儿童)。

A follower or supporter of Melanie Klein's theories.

提倡或支持克莱茵理论者。