Group Sequential Designs Applied in Psychological Research

Abstract: Psychological research is confronted with ever-increasing demands to save resources such as time and money while assuring high ethical standards. In medical and pharmaceutical research, group sequential designs have fundamentally changed traditional statistical testing approaches featuring only one analysis at the end of a single-stage study. They enable early stopping at an interim stage, after a group of observations, for efficacy or futility in case of an overwhelmingly large or small effect, respectively. Otherwise, the trial is continued to the next stage. On average over many studies time and money are saved and more ethical trials are facilitated by diminishing the risk of patients' exposure to inferior treatments. We provide an easy-to-use tutorial for psychological research replete with easily understandable figures highlighting the core idea of different group sequential designs, a workflow chart, an empirical real-world data set, and the annotated R code. Finally, we dem.... https://meth.psychopen.eu/index.php/meth/article/view/2811

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Group Sequential Designs Applied in Psychological Research ; volume:16 ; number:1 ; day:06 ; month:04 ; year:2020 ; Methodology ; 16, Heft 1 (06.04.2020)

Contributors, Places and Time

• Creator: Klemens Weigl ; Ivo Ponocny

Further information

• DOI: 10.5964/meth.2811
• URN: urn:nbn:de:101:1-2020101214215944771477
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:51 AM CEST