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According to Case, __________ impose(s) a systemwide ceiling on cognitive development.
Dependent Sample Designs
Research designs involving comparisons of measurements from the same group of subjects under different conditions or at different times.
Extraneous Variables
Factors in a study that could undermine the internal validity by influencing the dependent variable in a way not intended by the research.
Independent Variables
Variables in an experiment that are manipulated or changed by the researcher to observe their effect on dependent variables.
Counterbalanced Crossover Design
An experimental design where participants are exposed to multiple conditions in a sequence that is randomized to control for the order effects.
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