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The experiments discussed in this report do not have a direct relationship to each other but represent work on a series of sub-issues within the general framework of visual processing of information. Because of this discreteness, the report is organized into a series of papers. The first is a general review of tachistoscopic work on iconic memory and issues related to iconic memory. Following this paper are reports of seven experiments. (Eleven experiments were carried out, but a number of these were follow-up studies and therefore have been incorporated into the discussions of the original experiments.) The topics of the seven experiments are: (1) iconic memory: effects of luminance and cue modality; (2) a developmental experiment on order of report and scanning mechanisms; (3) iconic memory and types of visual cues; (4) iconic memory for letters and geometric forms; (5) binocular and dichoptic cuing in iconic memory; (6) parallel and serial processing in tachistoscopic recognition: two mechanisms; and (7) the role of verbalization in tachistoscopic recognition. (WR) U S DEPARTMENT CF HEALTH, EDUCATION & WELFARE NATIONAL INSTITUTE OF EDUCATION THIS DOCUMENT NAS BEEN REPRO DUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION ORIGIN AT iNG IT POINTS OF VIEW OR OPINIONS STATE() DO NOT NECESSARILY REPRE SENT OFFICIAL NATIONAL INSTITUTE OF EDUCATION POSITION OR POLICY