This report describes an auding and reading model that accounts for the development of receptive oracy and literacy skills. The model presents a classification scheme for the development of reading and auding skills which considers basic adaptive processes, languaging precursors, and languaging processes. Four hypotheses consistent with the model were derived: (1) the ability to comprehend language by auding will surpass ability to comprehend language by reading during early school years, until reading skill is acquired, after which the ability to comprehend by auding and reading will become equal; (2) performance on measures of ability to comprehend language by auding will be predictive of performance on measures of ability to comprehend language by reading, after reading skill is acquired; (3) performance on measures of reading rate and auding rate will be comparable, after reading decoding skill has been developed; and (4) training in comprehending by auding will transfer to reading, after reading skill is acquired. Research findings reveal that reading is based on, and utilizes, the same conceptual base and languaging competencies as auding, and that reading skill can be improved through training in languaging using oracy skills (auding and speaking). (Author/SW)