Voice vs. text output has no effect. Size Large displays are more arousing, and therefore focus attention better, but lead to poorer recall. Fidelity Video fidelity is not significant in determining arousal or recall. High-fidelity audio increases arousal and decreases memory. Timing and Synchrony Small delays between audio and video of a speaker are often not consciously noticed, but cause the speaker to be perceived as less interesting, pleasant, influential, and successful, and more agitated.
Successful chapters depend on people, good programs, shared interests, and member benefits.
Chapters must understand their purpose, and know why their purpose matters. Factors that contribute to success include doing the analysis to understand both the chapter and the community it serves, the stability of chapter leadership, and the nature of resources available to the chapter. Membership issues include reaching potential members and keeping existing members. There is a necessary critical mass for sustaining a chapter. Getting volunteers is an important and difficult issue.