Theories
Erickson's first psychosocial stage
Trust vs. Mistrust
Design where different ages are studied at one time?
Cross-sectional
Fraternal twins are also called ______.
Dizygotic twins
Ability to grasp with thumb and forefinger is ______.
Pincer grasp
Understanding that objects exist even when unseen is ______.
Object permanence
Which theory emphasizes culture and social interaction guiding development?
Vygotsky’s Sociocultural Theory
Design following the same people across years?
Longitudinal study
Tristan has intellectual disability + short attention span = likely ______.
Fragile X syndrome
Infants control trunk before fingers → ______ growth pattern.
Proximodistal
Repeating a behavior after delay is ______.
Deferred imitation
Harlow’s monkey study showed preference for ______ in attachment
Contact comfort
Carefully regulated procedure manipulating factors while holding others constant?
Experiment
Tamara has hook-shaped red blood cells but malaria resistance → ______.
Sickle-cell anemia
Infants can see before they crawl → ______ growth pattern.
Cephalocaudal
Elise sucking on a spoon after learning breast sucking → ______.
Assimilation
According to Bowlby, in Phase 3 babies actively ______.
Seek contact with caregivers
Which issue asks whether development is gradual or abrupt?
Continuity–discontinuity
Samantha has gland disorder causing breathing/digestion issues → ______.
Cystic fibrosis
Infant sleep problems linked to ______.
Inconsistent routines + excessive screen time
Kyoko understands 50 words but speaks 10 → ______ vocabulary > ______ vocabulary.
Receptive; spoken
John Bowlby argued infants develop a(n) ______ model of attachment.
Internal working model
Interaction of measured DNA variation with environment is called ______.
Gene × Environment interaction
The embryo’s inner cell layer forming digestive/respiratory systems is ______.
Endoderm
Which of the following is crucial for motor skill development?
Environmental motivation
Older adults can improve cognition through training, showing development is ______.
Plastic