Due to the German Trade union's financial support, the home also became known as the Solidarity International Laboratory Home. When that support ended, financial problems, together with internal dissension weakened the organisation of the Detski Dom which also came under external pressure as the psychoanalytic approach came under attack from supporters of Joseph Stalin due to its association with his rival for power, Leon Trotsky. Associated with the rise of Stalin and the Communist Party's turn away from psychoanalysis was the new science of childhood named pedology which was promoted by Aron Zalkind (1888–1936) a former adherent of psychoanalysis but now its leading critic.