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8 Cards in this Set

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INDEPENDENT VARIABLE
is the one the investigator expects to cause changes in another variable.
DEPENDENT VARIABLE
is the one the investigator expects to be influenced by te independent variable.
RANDOM ASSIGNMENT
participants to tretment conditions. by using an unbiased procedure, such as drawing numbers out of ahat or flipping a coin, investigators incrase the chances that participant's characteristics will be equally distributed across treatment groups.
LONGITUDINAL DISIGN
participants are studied repeatelity at different ages, and changes are noted as the participants mature
COHORT EFFECTS
longitudinal studies examine the development of ---children born at the same tie who are influenced by particular cultural and historical conditions. results based on one---may not apply to children developing at other times.
CROSS-SECTIONAL DESIGN
groups of people differing in age ar studied at the same point of time.
LONGITUDINAL0-SEQUENTIAL DESIGN
researches merge longitudinal and cross-sectional strategies by following a sequence of samples (two or more age groups) over time.
MICROGENETIC DESIGN
an adaptation of the longitudinal approach, presents children with a novel task and follows their mastery over a series of closely spaced sessions.