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in longitudinal studies, the co-occurrence of historical factors with changes in age; affects the ability to interpret results
in-depth description of psychological characteristics and behaviors of an induvidual, often in the form of a narrative
flexible, open-ended interview method in which questions are modified in reactions to the child's response
all the acharacteristics shared by induviduals growing up in a specific social and historical content
statistical measure, ranging from +1.00 to -1.00, that summarizes the strength and direction of the rrelationship between two variables; does not provide
study that assesses whether changes in one variable are accompanied by systematic changes in another variable
study in which induviduals of different ages are examined at the same point in time
providing research participants with a statement of the true goals of a study after initally decieving them or omitting information about its purposes
study methods, including observations and interviews, used by researchers to describe the behaviors and underlying meaning systems with a a given culture
research method in which one or more independent variables are manipulted to determine the effect on other, dependent variables
participant's formal acknowledgment that he or she understands the purposes, procedures, and risks of a study and agrees to participate in it
research in which the same participants are repeatedly tested over a period of time, usually years
statistical examination of a body of research studies to assess the effect of the common central variable
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