Examlex
In an experiment by Piaget that involved balancing a scale with weights, children were first able to use the trial-and-error method to achieve some understanding of balancing at approximately 10 years of age.
Valid Scales
Tools or instruments that have been proven to accurately and consistently measure variables they are designed to assess.
Focus Groups
A research method in which a small, diverse group of people are gathered to discuss and give feedback on a particular subject, product, or policy.
Single System Designs
A research design tailored to evaluate the effectiveness of an intervention or treatment on a single subject or system over time.
AB Designs
A basic type of research design that compares two groups, A and B, to assess the effect of an intervention or treatment.
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