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A single-blind design can help reduce bias by ensuring that participants do not know which treatment they are receiving, thus minimizing the impact of their expectations on the results. However, it may not fully eliminate confounding variables, particularly those related to the experimenter's influence, as the researchers still know which participants are in which group. To better control for confounding variables, a double-blind design, where both participants and researchers are unaware of group assignments, is often more effective. Therefore, while single-blind designs can mitigate some biases, they are not sufficient to eliminate all confounding variables.

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1w ago

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