New product ideation is the transformation of a raw idea into a robust concept with consideration of fit and feasibility of technologies, customer benefits, and market opportunity. Although the ideation process often involves ambiguous processes, it is the most critical activity in new product development (NPD). As a creativity task, the ideation process is considered heuristic rather than algorithmic. However, managing the ideation process as either a completely heuristic or an entirely algorithmic procedure leads to just conventional outcomes. Rooted in cognitive psychology, this study proposes that ideation activities in NPD should be pursued as Simonton's "constrained stochastic behavior." An ideation task not only needs good componential factors but also requires constraint to frame the task by precluding unwieldy ideas while promoting high variability of ideas. Focusing on the inputs and attempting to strike a balance between algorithmic and heuristic ideation process may provide the mechanisms to manage the psychological perceptions with an aim to stimulate and orchestrate the ideation staff's cognitive efforts to generate the creative idea. To achieve this goal, new product idea creativity is considered as the ideas that could turn out to be products that are novel to and useful for customers, and appropriate to firms' …