Klein noted that young children display an unexpectedly harsh, even savage, inner judge. A three-year-old who breaks a toy may react not with simple sadness but with severe self-punishment—night terrors, refusal to eat, or compulsive rituals. Why? Because, Klein argued, the infant’s earliest conscience is formed by . The child projects its own aggressive impulses (biting, kicking, screaming) onto the mother’s body (the “good” and “bad” breast). When the child later feels love, those aggressive phantasies return as guilt—and guilt manifests as a terrifying internal accuser.
Klein's theory posits that the child's psyche is composed of two primary structures: the "good" object and the "bad" object. The "good" object represents the nurturing, loving aspects of the caregiver, while the "bad" object symbolizes the frustrating, disappointing aspects. As the child navigates their relationships with caregivers, they begin to integrate these opposing objects, eventually developing a more nuanced understanding of themselves and others. Klein noted that young children display an unexpectedly
Klein’s evidence came from her play technique. In The Development of Conscience (1921 case notes), she describes “Erna,” age 4, who would ritualistically “wash” her dolls for hours. Erna’s phantasy revealed that she believed her angry thoughts had poisoned the doll-mother. The washing was reparation: an attempt to cleanse the internal bad object. Erna’s conscience was not a voice saying “be good”—it was a dramatic enactment of . Because, Klein argued, the infant’s earliest conscience is
By 1937, Klein had refined her theory into the concept of the (typically emerging between 3–6 months, but revisited throughout life). The paper Love, Guilt and Reparation (often published alongside The Development of Conscience ) synthesizes her mature thought. Klein's theory posits that the child's psyche is
Similarly, Klein's theories can inform parenting practices and educational strategies. By understanding the critical role of early relationships in shaping the child's conscience, parents and caregivers can foster a more supportive and nurturing environment, one that promotes healthy psychological development.