Abstract: The presentation will attempt to cover three research themes, united by their close relatedness to human aspects in computing. The first part is related to believability of virtual environments and agents, embodied in these environments. It includes an example of implementation of awareness believability ­ the ability of such agents to relate to their environment during interaction. This believability is formalised in terms of three components - environment-, self- and interaction-awareness. The second theme is related to the development of a visual language and analysis system, which can inform us about the quality of interactions in which we are engaged. It presents a way for encoding the way interactions unfold, a method for developing visual languages and a visual analysis system, geared towards patient-practitioner interactions in healthcare, where patients usually have limited medical background. The third part briefly presents work on including information about the structure of relations between actors in predictive modelling cycle, aiming at improving predictive accuracy.