The answer is trust.
Erik Erikson's first psychosocial task is "trust vs. mistrust." This stage occurs from birth to approximately 18 months of age. During this period, infants learn to trust their caregivers to meet their needs. If caregivers are reliable and consistent, the child develops a sense of trust. If not, the child may develop mistrust.
Integrity is associated with Erikson's eighth and final stage, "integrity vs. despair," which occurs in late adulthood. This stage involves reflecting on one's life and either coming to terms with it (integrity) or feeling regret and despair.
Initiative is part of Erikson's third stage, "initiative vs. guilt," which occurs between the ages of 3 and 5 years. During this stage, children begin to assert power and control over their environment through directing play and other social interactions.
Guilt is also part of Erikson's third stage, "initiative vs. guilt." If children are not allowed to take initiative or if they are overly controlled, they may develop a sense of guilt over their needs and desires.