INF3720-2017-6-E-2.pdf - UNIVERSITY EXAMINATIONS ‘Tg U N...

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Unformatted text preview: UNIVERSITY EXAMINATIONS UNIVERSITEITSEKSAMENS ‘Tg U N I SA mm IN F3720 Maleune 2017 SECOND PAPER HUMAN-COMPUTER INTERACTION II Duration 2 Hours 100 Marks EXAMINERS FIRST DR B CHIPANGURA SECOND PROF E MNKANDLA EXTERNAL DR AG VAN DER VYVER CIosed book examination This examination question paper remains the property of the Unwersfly of South Africa and may not be removed from the examination venue [ Please turn over] UNIVERSITY EXAMINATIONS UNIVERSITEITSEKSAMENS U N I SA " Wm IN F3720 MayIJune 2017 SECOND PAPER HUMAN-COMPUTER INTERACTION II Duration 2 Hours 100 Marks EXAMINERS . FIRST DR 8 CHIPANGURA SECOND PROF E MNKANDLA EXTERNAL DR AG VAN DER VYVER Closed book exammatlon Thus examrnatron question paper remains the property of the Unwersrty of South Africa and may not be removed from the examrnatron venue. Thls paper consrsts of 3 pages INSTRUCTIONS 1 . Answer all questions 2. All rough work must be done on the back of the answer booklet 3. The mark for each question IS Indicated In brackets next to the question [Please turn over] INF3720 MayI'June 20]? Question 1 [20 marks] 1 1 Explam what are expressrve, annoying and persuaswe 1nterfaces (9 marks) 1 2 D1scuss how the des1gn of a technology can change the attitude and behavrour of people (11 marks) Question 2 [14 marks] 2.1 Explaln the role of software desrgn pr1nc1ples (4 marks) 2 2 List five desrgn princrples that are concerned w1th how to determme what users should see and do when carrying out their tasks usmg an 1nteract1ve product according to Preece et a1 (2015) (5 marks) 2 3 One of the mam desrgn principles for websrtc de51gn IS s1mp11c1ty Nlelsen proposed that desrgners go through all then des1gn elements and remove them one by one If a design works well w1thout an element, then Just remove it. Do you think [hlS IS a good de51gn pnnmple" DISCUSS. (5 marks) Question 3 [12 marks] A classm early example of a conceptual framework 1n HCI is Norman’s ( 1998) expllcation of the relatlonship between the desrgn of a conceptual model and the user’s understanding of it. The framework comprises three interacting components. the des1gner’s model, users’ model and the system 1mage 3 1 D1scuss each of the above components (6 marks) 3 2 Why 18 it important that desrgners consolidate the three components when deSIgnmg software? (6 marks) Question 4 [20 marks] Several e-readers for readmg e—books, watching mov1es or v1ew1ng plctures are avallable on the market. The exact desrgn differs between models but they support book readmg that is intended to be as comfortable as reading a paper book. The developers of a new e-reader want to find out how appealing it Will be to young people under the 18 years of age To this end, they have asked you to conduct some interwews for them You are requ1red to answer the followmg quchODS in preparatlon for the 1nterv1ew 4 1 What is the goal of your data gathering sessmn" (2 mark) 4 2 List any three techniques that could be used for capturlng the 1nterv1ew (6 marks) 4 3 Dlscuss any three disadvantages of taking notes during the interv1ew‘7 6 marks) 4 4 Suggest any three unstructured 1nterv1ew questions that focus on user experlence goals (6 marks) [ Please turn over] INFBTZO May/June 20” Question 5 [10 marks] When following a user~centred approach in interaction deSign, there is a pnnc1ple of ‘focus on users and tasks early’. T1113 15 one of the prinCiples that make it easy and useful to use a computer system Name and explain five sub—princ1ples that explain the meaning of the above statement (10 marks) Question 6 [24 marks] Heuristic evaluation is an informal usability inspection technique developed by Nielson and his colleagues in which experts, guided by a set of usability principles known as heuristics, evaluate whether user-interface elements, such as dialogue boxes, menus, naVigation structure or on—line help conform to the prinCiples. Discuss heuristic evaluation under the followmg headings: 6 1 Briefly discuss the three stages of domg heuristic evaluation. (6 marks) 6.2 Shneiderman’s eight golden rules are used as heuristics for identifying usability problems. Discuss the following three rules. a Cater for universal usability (6 marks) b. Offer informative feedback (6 marks) 0. Permit easy reversal of actions (6 marks) The End © UNISA 2017 ...
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