This paper presents a new theoretical model to explain behavior toward electronic communication tools based on evolution theory. The model proposes that inherited biological traits acquired by the human species through Darwinian evolution bias an individual's choice of preferred communication toward face-to-face communication. The model also suggests that e-communication media that selectively incorporate elements of actual unencumbered face-to-face interaction (e.g., physical presence, ability to see and hear others, synchronicity) will be perceived as more adequate for communication than other media devoid of those elements, and therefore as demanding less individual cognitive effort to be used, particularly in tasks requiring intense communication.