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science of human development
the science that seeks to understand how and why people of all ages and circumstances change or remain the same over time
a way to answer questions that requires empirical research and data-based conclusions
a specific prediction that is stated in such a way that it can be tested and either confirmed or refuted
signifies developments over time that appear to persist, unchanging, from one age to the next
a time when a particular type of developmental growth (in a body or behavior) must happen
a time when a certain type of development is most likely to happen and happens most easily (ex: language learning)
a group of people who were born at about the same time and thus move through life together, experiencing the same historical events and cultural shifts at about the same time
socioeconomic status (SES)
a person's position in society as determined by income, wealth, occupation, education, place of residence, and other factors
people whose ancestors were born in the same region and who often share a language, culture, and religion
a group of people who are regarded by themselves or by others as distinct from other groups on the basis of physical appearance
a method of testing a hypothesis by unobtrusively watching and recording participants' behavior in a systematic and objective manner, in a natural setting, in a laboratory, or in searches of archival data
a research method in which the researcher tries to determine the cause-and-effect relationships between two variables by manipulating one and observing and recording the results
the variable that is introduced to see what effect it has on the dependent variable
the variable that may change as a result of whatever new condition or situation the experimenter adds
a group of participants in a research study who experience some special treatment or condition
comparison group/ control group
the group who doesn't experience the special condition or treatment in an experiment
a research method in which information is collected from a large number of people by interview
a research design that compares groups of people who differ in age but are similar in other important characteristics
a research in which the same individuals are followed over time and their development is repeatedly assessed
a hybrid research method in which researchers first study several groups of people of different ages
research that provides data that can be expressed with numbers, such as ranks or scales
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