Trust vs. mistrust is the first stage of Erikson's psychosocial development theory, spanning birth to about 18 months, in which an infant develops basic trust if caregivers reliably meet its needs and mistrust if care is inconsistent or neglectful.
Trust vs. mistrust is stage one of Erik Erikson's eight-stage theory of psychosocial development. From birth to roughly 18 months, a baby is completely dependent on caregivers for food, comfort, and safety. If those needs are met consistently, the infant develops a basic sense of trust, an underlying feeling that the world is predictable and people can be relied on. If care is unreliable, cold, or neglectful, the infant develops mistrust instead.
The big idea behind Erikson's theory is that each stage of life presents a social conflict you have to resolve, and how you resolve it shapes everything after. Trust vs. mistrust is the foundation of the whole stack. A baby who builds basic trust is set up to handle later conflicts like autonomy vs. shame and doubt (toddlerhood) and intimacy vs. isolation (young adulthood). Think of it as the ground floor of personality. If the foundation is shaky, every floor above it wobbles a little.
This term lives in Topic 6.5 (Adulthood and Aging) because Erikson's theory is the AP course's main lifespan framework. Unlike Piaget, who stops his stages in adolescence, Erikson covers birth to death, which is exactly why the CED uses him to explain social development across the entire lifespan. Knowing trust vs. mistrust means knowing where the whole sequence starts, and the exam loves asking you to match a stage to its age range and central conflict. It also gives you a theoretical lens for why early caregiving matters, which links directly to attachment research from the same unit. If you can explain how stage 1 connects to later stages and to Ainsworth's attachment styles, you're doing the cross-concept thinking that earns points.
Keep studying AP Psychology Unit 6
Erikson's stages of psychosocial development (Unit 6)
Trust vs. mistrust is stage 1 of 8 in this framework. You need the whole ladder, not just the first rung, because exam questions often hand you an age or a behavior and ask which stage it belongs to.
Secure Attachment (Unit 6)
Ainsworth's attachment research is the experimental version of the same idea. Responsive caregiving produces securely attached infants, which is basically Erikson's 'trust' measured in a lab with the Strange Situation.
Insecure Attachment (Unit 6)
Inconsistent or unresponsive caregiving produces insecure attachment, the empirical parallel to Erikson's 'mistrust.' Pairing these two concepts in an FRQ shows you understand theory and evidence are pointing at the same thing.
Emerging Adulthood (Unit 6)
Erikson's stages keep going long after infancy. The trust built in stage 1 becomes the raw material for intimacy vs. isolation, the young-adult stage about forming close relationships. Resolving stage 1 well makes stage 6 easier.
Trust vs. mistrust shows up almost entirely in multiple-choice questions that test stage identification. A typical stem describes an infant whose caregiver responds (or fails to respond) to its needs and asks you to name the stage, the theorist, or the outcome. Watch for distractor stages, especially stage 2 (autonomy vs. shame and doubt), which covers toddlers learning to do things for themselves. Questions also test Erikson across the lifespan, like asking which theorist highlighted developing intimate relationships in young adulthood (Erikson, via intimacy vs. isolation). No released FRQ has used 'trust vs. mistrust' verbatim, but Erikson's framework is fair game for free-response prompts about social development, so be ready to apply the stage to a scenario, not just define it.
These are Erikson's first two stages and they get swapped constantly. Trust vs. mistrust is about infants (birth to ~18 months) and depends on whether caregivers meet basic needs. Autonomy vs. shame and doubt is about toddlers (roughly 18 months to 3 years) learning to do things for themselves, like feeding themselves or potty training. Quick check: if the baby is passive and being cared for, it's trust vs. mistrust. If the kid is actively trying to do something independently, it's autonomy vs. shame and doubt.
Trust vs. mistrust is the first of Erikson's eight psychosocial stages, lasting from birth to about 18 months.
Infants develop basic trust when caregivers consistently meet their needs, and mistrust when care is unreliable or neglectful.
Erikson's theory covers the entire lifespan, which is why it anchors Topic 6.5 on adulthood and aging, not just infancy.
Trust vs. mistrust parallels attachment research, since responsive caregiving predicts both Erikson's trust and Ainsworth's secure attachment.
Don't confuse it with stage 2, autonomy vs. shame and doubt, which is about toddlers learning independence.
On MCQs, match the stage by age range and conflict, since stems usually describe a scenario and ask you to identify which stage it represents.
It's the first stage of Erik Erikson's psychosocial development theory, occurring from birth to about 18 months. Infants whose caregivers reliably meet their needs develop basic trust, while inconsistent care produces mistrust.
No, but they're closely related. Trust vs. mistrust is Erikson's theoretical stage, while attachment (secure or insecure) comes from Ainsworth's Strange Situation research. Both say responsive caregiving in infancy shapes later relationships, so they make a great paired answer on the exam.
Trust vs. mistrust is stage 1 (birth to ~18 months) and is about caregivers meeting an infant's needs. Autonomy vs. shame and doubt is stage 2 (toddlerhood) and is about kids learning to do things for themselves. Passive baby being cared for means stage 1, active toddler asserting independence means stage 2.
No. Erikson argued early outcomes influence later stages but don't lock anyone in. A child who develops mistrust faces later conflicts with a shakier foundation, but later positive relationships can still help. Avoid absolute claims like 'ruined forever' on FRQs.
Birth to approximately 18 months. This age range is one of the most testable facts about the stage, since MCQs often hinge on matching the correct age to the correct conflict.
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
Review units, study guides, and course resources.
Check this vocabulary in multiple-choice context.
Apply key concepts in written AP responses.
Estimate the exam score you are working toward.
Review the highest-yield facts before practice.
Put the full course together before test day.