This paper discusses psychological effects associated with the latest technology in computer interfaces. Emphasis is given to issues involved with multi-media systems and the development of the self on emotional, intellectual, and social levels. A review of technology attitudes and individual differences is presented in relation to the voluntary use of technology; this is contrasted with psychological measures associated with the rejection of technology. Consideration is given to which psychological measures are typically cited by the literature as being associated with emotional, intellectual, and social "success"; these are compared with measures which appear to predict successful technology adoption. The likely effects of the latest trends in technology on the mental world in which a developing self operates, including the effects of new technology such as exploratory multi-media teaching systems, virtual reality, and "GroupWare" are summarized. Reviews of design solutions that have been explored with this technology are emphasized, and psychological issues introduced when computer interfaces provide user populations with multi-sensory experiences are summarized. The paper concludes with a discussion of other issues and factors that determine what makes an effective design solution within the paradigm of increasing design spaces and diverse user populations, including intellectual and emotional effects of multi-media systems on the development of the self and group in a rapidly changing technological environment. (Contains 142 references.) (AEF)