Difficulty: Easy

Average Score: 75%

Which of the following data collection techniques best represents a true experimental design?

Rationale

Assigning fifth-grade students to two groups with one group participating in a self-esteem group and the other group completing classroom activities.

This technique exemplifies a true experimental design as it involves random assignment of participants into distinct groups, allowing for controlled comparison of outcomes between the intervention and control conditions. This design is critical for establishing causal relationships.

A (Collecting student satisfaction data after a classroom guidance lesson) YOUR ANSWER

This approach lacks the characteristics of a true experimental design since it does not involve manipulation of an independent variable or random assignment. Instead, it merely assesses perceptions post-lesson without establishing a cause-and-effect relationship.

B (Comparing scores on a social and emotional learning (SEL) inventory between ninth- and tenth-grade students) YOUR ANSWER

While this method compares groups, it does not involve random assignment or manipulation of variables, making it an observational study rather than an experimental design. The differences in scores could be influenced by a variety of external factors unrelated to any intervention.

D (Following a single group of students across a semester to evaluate academic progress) YOUR ANSWER

This longitudinal approach tracks changes over time but lacks a control group or random assignment, which are essential features of a true experimental design. It does not allow for causal inferences since there is no comparison between different conditions or interventions.

Conclusion

True experimental designs require the manipulation of an independent variable and random assignment to groups to effectively establish causal relationships. Among the given choices, only the method of assigning fifth-grade students to distinct groups for intervention and control represents a true experimental design, allowing for valid conclusions about the impact of the self-esteem group on student outcomes.

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