Questionnaire design
Based on the research model, a questionnaire was developed as shown in the
Appendix. A quantitative approach was selected to allow objective comparison across
different industries. The objective of this questionnaire was to collect data regarding
managerial processes executed in projects and the success of these projects. In the
questionnaires, project managers were asked to estimate the frequency of use of project
planning practices (using a 1-5 Likert scale) in the most recently completed projects
they had managed. This scale has been chosen to be constant with other maturity
models developed for similar purposes (Paulk et al., 1995; Ibbs and Kwak, 2000). In
order for the project managers to make accurate estimates, the relevant planning
processes and tools were introduced and demonstrated.