Example of explanatory feedback Diagnosis Diagnostic feedback attempts to explain the source of the incorrect response by comparison with common mistakes. In computer-based instruction, this necessitates a knowledge of common errors in reasoning for a particular problem so that a matching function can take place. Another technique is to have the learners compare responses to prototype answers. At an additional level, elaboratory feedback provides related information designed to enhance and extend the learner's knowledge acquisition. It is based upon the elaboration learning theory that promotes understanding by establishing connections between new content and prior knowledge.
Elaboration is given with both correct and incorrect responses.