Which stage of Erik Erikson's psychosocial development occurs between birth and 1½ years?

The stage of Erik Erikson's psychosocial development that occurs between birth and 1½ years is Trust vs. Mistrust. This foundational stage emphasizes the importance of an infant's relationship with caregivers. During this period, the infant learns to trust that their needs will be met, such as hunger, comfort, and affection. Successful navigation of this stage results in a sense of security and trust in the world. When caregivers are responsive and consistent, the infant develops a belief that the world is a safe place and that they can rely on others. Conversely, inconsistent or neglectful care can lead to mistrust and insecurity, impacting the child's ability to form healthy relationships in the future. This stage is crucial as it sets the groundwork for all subsequent stages of Erikson's psychosocial development.