Cognitive scientist donald a. norman (1988) identified three different features of a conceptual model that interface designers must consider. what are these three features

The three features are The Visceral Design, The Behavioral Design, and The Reflective Design.  Visceral mentions to the “gut” in this instance. It’s a reference to the perception of “gut instinct”. It’s an unintentional level of response to definite experiences.  Though, to get to the behavioral design we have to pass over the visceral design test first. The reflective design is plentiful more subtle than the first two but equally significant if we want our designs to have lasting value for our users. 

acts of terrorism occur globally. the united nations global counter-terrorism strategy was created in order to build adequate systems of support and solidarity with victims of terrorism. here´s a summary of the proposed key themes: the importance of giving victims a face and a voice; protecting their dignity; giving victims legal status and defending their legal rights; providing victims with medical, psycho-social and financial support; building solidarity with victims; improving media coverage of victims; and focusing on the link between victims and counter-terrorism efforts more generally.