Unit 3 Flashcards
Longitudinal study
Involves subjects that are all the same age
Subjects are observed or measured repeatedly as they grow older
The development of individuals studied as it occurs
Developmental psychology
The study of how people change as they grow older
Cross-sectional study
Involve subjects of different ages
Subjects are observed or measured just once
The development of individuals is inferred from differences among subjects of different ages
Heredity
Refers to the genes children inherit from parents
Also called nature
Prenatal period
From fertilization to birth
Infancy
From birth to one-year
Toddler stage
From 1 to 3 years
Childhood
From 3 to 12 years
Prenatal development
Refers to all the changes that take place between fertilization and birth
Critical period
A time in early life when development may be greatly affected by environmental influences
Physical development
Refers to changes in size and shape of the body
Motor development
Increasing control of the body
Maturation
Refers to processes by which body parts become fully functioning and the whole organism becomes an adult
Reflex
An automatic response to a stimulus
Rooting reflex
An infant turns his head in the direction of your hand when you stroke his cheek