Brian Wants to Study How Toddlers Tackle Difficult Situations by Themselves

question 63

Multiple Choice

Brian wants to study how toddlers tackle difficult situations by themselves in their parents' absence.While observing the children in a playground,Brian helps Timmy,a two-year-old,tie his shoelace.This is an example of

• A)research participant bias.
• B)experimenter bias.
• C)placebo effect.
• D)double-blind experiment.

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