Planning product design & development: resource-influencing factors based on experience

Time is the universal resource for Product Design and Development (PDD) projects which has a range of factors that influence its length. By sharing their perceptions on such factors, designers can provide insight to those who estimate/schedule. Understanding which factors are most influential may result in improvements in such estimations, offering improved organisational understanding of product development and a perspective to evaluate initial project briefs. This paper examines the factors that influence PDD project length found in literature, comparing them to those considered influential by design teams.