The implementation of grassroots product-oriented social innovations by non-governmental organisations: proposal of a measurement tool

The aim of this article is to present a tool for measuring the implementation of grassroots product-oriented social innovations by non-governmental organisations (NGOs). This tool will enable a quantitative assessment of the activities of NGOs in regard to the implementation of these innovations as well as a comparison of various areas based on the number of organisations which implement these innovations. The validation of the tool was performed during studies conducted in 2017 on a random sample of NGOs located in Lodz (a city in central Poland). The studies resulted in the establishment of a two-factor structure for the Index of Implementation of Grassroots Product-Oriented Social Innovation. The tool is characterised by satisfactory psychometric properties in regard to factor validity, the internal consistency of each subscale and the stability of test scores over time.