Praxis 5422 Practice Question
Which of the following data collection techniques best represents a true experimental design?
Correct Answer: C
Rationale: Option C exemplifies a true experimental design as it involves random assignment of fifth-grade students to two distinct groups, allowing for a direct comparison of outcomes from the self-esteem group versus classroom activities. This method controls for confounding variables and establishes causality.
Option A lacks a control group and does not involve manipulation of variables, making it more observational than experimental.
Option B compares two existing groups without random assignment, which limits the ability to draw causal inferences.
Option D follows a single group over time without a control, which does not meet the criteria for experimental design.
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