Which psychoanalyst(s) developed the concept of oral pleasure as being the base of attachment between an infant and a mother?

Erikson is known for his theory of psychosocial development, which outlines eight stages of human development across the lifespan. While he explored the importance of early relationships, he did not specifically attribute the concept of oral pleasure as the basis for attachment; rather, he focused on broader psychosocial conflicts.

The Harlows conducted significant research on attachment through their studies with rhesus monkeys, demonstrating the importance of comfort and security over mere feeding. Their work emphasizes emotional bonds but does not specifically link oral pleasure to attachment, as their focus was on tactile comfort and maternal presence.

Bowlby is recognized for his attachment theory, which posits that a strong emotional bond between a child and caregiver is necessary for development. He emphasized the role of proximity and safety but did not connect this directly to oral pleasure as Freud did. His work builds on earlier theories without focusing on psychosexual stages.