Handbook of Management Scales/Group efficacy

Description
Group efficacy was measured with four items taken from Salanova, Llorens, Cifre, Martínez & Schaufeli (2003).

Items

 * I feel confident about the capability of my group to perform the tasks very well.
 * My group is able to solve difficult tasks if we invest the necessary effort.
 * I feel confident that my group will be able to manage effectively unexpected troubles.
 * My group is totally competent to solve the task.

Source

 * Zhang et al. (2014): Relational Versus Collective Identification Within Workgroups: Conceptualization, Measurement Development, and Nomological Network Building. Journal of Management, Vol. 40, No. 6, pp. 1700–1731