Star League Inc. (Headquarters: Shibuya-ku, Tokyo; Representative Director: Takahiro Chuba) has released a new research report, "The Real Reason Why Corporate Training and Development Isn't Effective," as part of its "Decider® Management Research" series, which incorporates findings from academic research. ■ Executive Summary This report reviews the foundational frameworks of corporate training in management science and updates misunderstandings regarding the limitations of training and development. It also incorporates insights from transfer of learning research in cognitive psychology as a related field, confirming the constraints of adult education itself. Beyond presenting quantitative results, it offers unique practical interpretations, making it usable as an actionable white paper. Practical skills training has confirmed effectiveness in job performance. Systematic denial of the enhancement of thinking ability—cognitive capacity. Management science training theory also updates its frameworks, clarifying the scope of effective participants and the necessary workplace support. ■ Full Report The full report is available at the following URL: https://www.star.careers/biz/performance/training-limitation/ ■ About Decider® Management Research This is proprietary research aimed at disseminating new insights, such as academic findings, into the practical field, focusing on management challenges. Its purpose is to provide actionable white papers by interpreting research paper summaries in the context of daily business. ■ About Decider® Insights brought to management science by high-precision analysis of personality using the Big Five. —Strategy was more about selecting managers than business models. Decider® provides a new era of management frameworks through an easy-to-use cloud service. It implements scientifically standardized methods in internal surveys ahead of the world. It allows for easy analysis of "what kind of organization can be built?" from individual aptit