A "not invented here" mentality is considered what kind of barrier?

The "not invented here" mentality refers to an attitude or mindset where individuals or organizations prefer to develop their own solutions or processes rather than adopting ideas or technologies that have been created elsewhere. This mindset can significantly hinder the effective implementation of Integrated Product and Process Development (IPPD) practices, which emphasize collaboration, integration, and the use of existing resources and knowledge.

In the context of IPPD, this mentality can create a barrier by fostering resistance to external input and collaboration with other teams or organizations. When team members are unwilling to consider or use outside innovations, it can lead to missed opportunities for improvement, increased duplication of effort, and an overall slowdown in project progress. Successful IPPD relies on leveraging the collective expertise and innovations that exist beyond the immediate team or organization; therefore, the "not invented here" attitude directly contradicts the collaborative spirit that IPPD aims to promote.

Understanding this concept is critical for program managers, as overcoming this barrier can enhance team performance, drive efficiencies, and lead to better project outcomes by incorporating diverse perspectives and existing solutions.