The impact of goal specificity and goal type on learning outcome and cognitive load. - Joachim Wirth; Josef Künsting; Detlev Leutner (Comput. Hum. Behav., 2009)

The goal specificity effect on strategy use and instructional efficiency during computer-based scientific discovery learning. - Josef Künsting; Joachim Wirth; Fred Paas (Comput. Educ., 2011)