Biological and environmental factors that are associated with a certain historical event, such as the 9/11 terrorist attack on the World Trade Center in New York, can be considered __________.

To learn about children’s toy preferences, researchers interview children at a local preschool and base their inferences on the children’s responses. This is an example of __________ research.

Which developmental psychologist developed an approach that emphasizes learning by observing the behavior of another person, called a model?

What technique ensures that personal characteristics that might affect the outcome of the experiment are divided proportionally among the participants in the different groups, making groups equivalent?

The development of the sociocultural theory is attributed to __________.

Walter is a college student who is about to graduate from college. At what age would he say a substantial change is occurring in his life?

What is the method of research borrowed from the field of anthropology and used to investigate cultural questions?

Identify the second step in the scientific method:

Early developmentalists tended to focus their attention on __________, often to the exclusion of other parts of the life span.

List and describe the three major steps of the scientific method.