Group Performance on a Challenging Task

A manager assigns two different projects to two separate, equally-sized groups of employees. Group A is tasked with a simple, repetitive job: sorting a large batch of mail. Group B is tasked with a difficult, creative project: designing a new, innovative software feature that requires unique input from each member. Based on established principles of group dynamics, which of the following outcomes is most likely regarding individual effort?

Motivation and Necessity of Input on Challenging Tasks