the babies that have been seen through this phase well are likely to be more aggressive clinically than the ones who have not been seen through the phase well, and for whom aggression is something that cannot be encompassed
Winnicott argues that adequate early developmental holding paradoxically produces more clinically visible aggression, because only the well-held infant can integrate rather than disown aggressive impulse, requiring a fundamental rewriting of psychoanalytic instinct theory.
, Playing and Reality, 1971thesis