The continuation of research effort

The continuation of research efforts in this field did, however, contribute critically to another development: the definition and central focus of the field of instructional technology. The common core of research investigations, however based in theory, came to be recognized as studies of the conditions for effective learning. Some of these conditions were, to be sure, the capacities and qualities of the individual human learner, including such things as visual and auditory abilities, speech and print comprehension abilities, and so on. Other conditions, in fact the other large set, were media-based conditions, pertaining to the kind of presentation made to the learner, and to its timing, sequence, and organization. As research continued in this field, these latter ideas became increasingly prominent.