What is the point of developmental psychology?
To describe and explain the changes that occur over time the thought, behavior, reasoning, and functioning of a person due to biological, individual, and environmental factors/influences
What do developmental psychologists do?
Study children’s development from a variety of theoretical perspectives and methodsß
Does age alone influence development?
No.
What are the main factors that influence development?
Maturation and changes resulting from experience lead to child development
Aspects of development that are primarily under genetic control and are relatively uninfluenced by the environment
Maturation
Provide an example of maturation.
Puberty
Describes environmental influences on development
Experience `
Provide an example of experience.
Exposure to language
____ and ____ about human nature will affect how we raise our own children and interpret studies of children
Assumptions and ideas
Common, everyday ideas that we hold about development
Folk theories of development
A study where children (or general participants) of different ages are observed at a single point in time
Cross-sectional designs
What are the pros of cross-sectional designs?
Least time consuming, quick estimates of changes that occur with age. Good for one time things like quickly teaching a skill
What are some cons of cross-sectional designs?
no way to describe an estimate of continuity or discontinuity of various processes over age such as personality (as the people would likely be different in background)
A study where more than one observation of the same group of children is made at different points in their development
Longitudinal study
What are the pros of longitudinal designs?
Can assess within person changes with age and can test theories about how change happens (gradually? Suddenly?)
What are some cons of longitudinal studies?
Costly, time consuming
Selective survivorship- results are based on what people can continue to stay in the study
Cohort-specific: results specific to people in that study sample
Repeated testing: testing same questions can mean that people just naturally get better at them
Do longitudinal and cross-sectional studies tell
the same story?
Mostly yes, we see similar changes in groups such as 4 to 5 year olds regardless of what studies are used, though not always
Provide an example where longitudinal and cross-sectional studies provide different results
Infant physical growth particularly in 4-5month olds- continuous growth curve according to cross-sectional studies, but the longitudinal studies imply that hte change is really sudden, step-like/bursts of development
What are the three research methods used in developmental psychology
Experimental methods, observational/correlational, psychological assessment
Behavior does not occur and development does not take place without a ____
Cause
What is the aim of experimental methods in developmental psychology?
To specify in as precise a manner as possible, the causal relationships between maturation, experience, and behavior
A factor that the experimenter varies to see if there are changes in the child’s response
The independent variable
The behavior or outcome that is measured or observed in a study
Dependent variable
What is an example of levels of an independent variable?
Two levels/conditions:
Experimental group, control/comparison group