Working in collaborative groups and teams now represents the practice predominantly adopted by organizations aspiring to create innovation and to remain competitive (Korde & Paulus, 2017; Paulus, 2000). However, this trend towards boundless collaboration at work is harshly criticized by a theory called the “New Groupthink”, which argues for a resulting discrimination of introverted employees (Cain, 2012, 2013). According to this perspective, introverts suffer from working conditions that inhibit individual and quiet work. The theory consequently argues that the current shift towards limitless collaboration overall elicits lower creativity and achievement levels due to the resulting suppression of introverts (Cain, 2013). Provided that the “New Groupthink’s” claim is reasonable, this inefficiency hence depicts a relevant issue for companies by reason of creativity and innovation’s decisive stake in todays’ turbulent environments. This paper examines the existing performance gap between introverts and extraverts in group brainstorming. This research aims at assessing whether hybrid brainstorming can equate introverts with extraverts by balancing their idea contribution and therewith lower the effect theorized by the “New Groupthink”. It is intended to suggest solutions to both introverts, with regards to enhancing their stake in brainstorming, and companies, with regards to how to apply this ideation method in its most efficient way. The research at hand is of quantitative nature, whereas the methodological approach selected constitutes an experimental study. The sample consists of a total of 87 business students; personality types are differentiated according to the introversion-extraversion dimension. Based on the obtained results, inferences can be made about the effectiveness and suitability of the traditional and hybrid brainstorming methods considering the proportionate idea-contribution and post-brainstorming satisfaction levels of the two personality types. Results indicate that applying hybrid brainstorming is suggested to be suitable for both introverts, who feel omitted in traditional brainstorming, and companies, to better include introverts’ ideas and to enhance overall results. The study adds original contributions to the creativity and brainstorming literature by providing first suggestions of how to counter the “New Groupthink” effect. It emphasizes the need to further explore the scarcely researched factor of personality in brainstorming and to search for solutions to strengthen the contribution of introverts. Further studies are required to elaborate on the hybrid methods’ potential with regards to the empowerment of introverts in ideation.