A Level Psychology OCR Practice Exam

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What design did Chaney et al (2004) utilize in their experiment?

Between-subjects design
Repeated measures design
Longitudinal design
Cross-sectional design

The correct answer is: Repeated measures design

Chaney et al. (2004) utilized a repeated measures design in their experiment. This design involves using the same participants in all conditions of the experiment, allowing for direct comparison of outcomes within the same individuals. By employing this method, researchers can control for participant variables such as individual differences in response to treatments or interventions, thereby increasing the reliability of the results. In the context of Chaney et al.'s research, this design was particularly effective because it allowed the researchers to assess changes in behavior or attitudes (in this case, related to the use of an asthma inhaler) across different conditions administered to the same group, enhancing the internal validity of their findings. Such a structure can reveal how participants respond over time to the same stimulus, offering deeper insights into behavioral changes.