This study tested the notion that the impact of clarity (i.e., structure) on learning is indirect and occurs, in part, through the reduction of cognitive load and subsequently through students' motivation to process instructional information. Two hundred fifty-two students were randomly assigned to one of two text-based lessons (clear or unclear)…

This study examined two effective teaching behaviors traditionally considered by instructional communication scholars to associate positively with students' academic experiences: instructor clarity and immediacy. Our study situated these teaching behaviors in a conditional process model that integrated two key assumptions about student learning:…

Presents a taxonomy that organizes learner activities into the dimensions of mental, social, and physical involvement. Applies the taxonomy or model to speech class activities and reports validity evidence from several research studies. (PD)