Human Growth and Development Key Concepts
WGU Human Growth and Development –
Key Concepts Study Guide for Exam
Preparation (2025–2026).
Placenta Providing of nutrients and oxygen
Trophoblast Outer cells of human blastocyst
Germinal period of prenatal First two weeks post conception
development
Teratogens They can cause malformed features
Object permanence Understanding objects out of sight still exist
, Zone of proximal development Four-year-old can almost write but needs some
help
Zygote What is the initial cell that contains the genetic
information of both parents?
Sigmund Freud Which psychoanalysts developed the concept of
oral pleasure as being the base of attachment
between an infant and mother?
Recommended sleep for toddlers 11-14 hours according to the National Sleep
Foundation
Erickson's trust versus mistrust stage Attachment between child and caregiver
Scotopic sensitivity in middle Eyes lose their ability to see in dimmer light
adulthood
Initiative versus guilt Which Stage of Ericsson's theory of psychological
development in early childhood includes initiative
versus guilt?
Gender dysphoria What do transgender children experience when
they feel distress accompanying a mismatch
between their gender identity and biological sex
assignment?
Cooperative play Children learn to interact with peers to achieve a
common goal
Cooperative and associative play Which forms of play indicate that children by the
age five have achieved strong psychosocial
development skills?
WGU Human Growth and Development –
Key Concepts Study Guide for Exam
Preparation (2025–2026).
Placenta Providing of nutrients and oxygen
Trophoblast Outer cells of human blastocyst
Germinal period of prenatal First two weeks post conception
development
Teratogens They can cause malformed features
Object permanence Understanding objects out of sight still exist
, Zone of proximal development Four-year-old can almost write but needs some
help
Zygote What is the initial cell that contains the genetic
information of both parents?
Sigmund Freud Which psychoanalysts developed the concept of
oral pleasure as being the base of attachment
between an infant and mother?
Recommended sleep for toddlers 11-14 hours according to the National Sleep
Foundation
Erickson's trust versus mistrust stage Attachment between child and caregiver
Scotopic sensitivity in middle Eyes lose their ability to see in dimmer light
adulthood
Initiative versus guilt Which Stage of Ericsson's theory of psychological
development in early childhood includes initiative
versus guilt?
Gender dysphoria What do transgender children experience when
they feel distress accompanying a mismatch
between their gender identity and biological sex
assignment?
Cooperative play Children learn to interact with peers to achieve a
common goal
Cooperative and associative play Which forms of play indicate that children by the
age five have achieved strong psychosocial
development skills?
