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Which Item Is NOT a Source of Variability in Physical

question 156

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Which item is NOT a source of variability in physical development amongst individuals?


Definitions:

Random Assignment

A method used in experiments to evenly distribute participants across various groups, ensuring that each has an equal chance of being assigned to any group.

Selection Bias

The assignment of participants to experimental or control groups in such a way that systematic differences among the groups are present at the beginning of the experiment.

Placebo Effect

A phenomenon where a person experiences a perceived improvement in condition due to their expectations, rather than the effect of an active intervention.

Placebo Effect

A psychological phenomenon where patients experience perceived or actual improvements in their condition due to their belief in the efficacy of a treatment that is inert or not specifically effective for the condition being treated.

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