Abstract
The phenomenon of multiple users interacting together with a single shared system interface to perform a task (i.e., a multiuser human-computer interaction) is under-investigated in the Human-Computer Interaction (HCI) literature, yet it shows promising avenues for research. For example, little is known about cross-level influences driving collaborative use of a shared system interface, and the literature lacks knowledge about collective adaptation of users to triggers in this setting. The present work contributes to contemporary research on multiuser HCI with system interfaces. As an initial effort, it focusses on the joint use of online shopping platforms by couples. A survey is conducted with 390 respondents in the USA about couples’ habits regarding joint online shopping. Results suggest that joint online shopping is overwhelmingly common among couples and that they engage in such activity in a wide variety of ergonomic layouts. Our findings constitute preliminary evidence and intrinsically call for more researchers’ interest in investigating emotional, cognitive and behavioral dynamics taking place when multiple users jointly use system interfaces. Such research endeavors may ultimately inform and optimize multiuser system designs and corresponding products and services.
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Appendix A: Pairwise Comparisons of Bar Charts’ Levels
Appendix A: Pairwise Comparisons of Bar Charts’ Levels
Dependent variable | Level 1 | Level 2 | t value | Adjusted p-value |
|---|---|---|---|---|
Type of products | Clothing and Fashion | Furniture and Appliances | 0.07 | 1 |
Type of products | Clothing and Fashion | Groceries | 5.79 | <.0001 |
Type of products | Clothing and Fashion | Travel and Tourism | −6.80 | <.0001 |
Type of products | Clothing and Fashion | Classified Ads Websites | 0.65 | 1 |
Type of products | Clothing and Fashion | Art and Shows | 5.04 | <.0001 |
Type of products | Clothing and Fashion | Cars | 3.88 | 0.00 |
Type of products | Clothing and Fashion | Computers and Electronics | −3.15 | 0.03 |
Type of products | Clothing and Fashion | Leisure Activities | −1.43 | 1 |
Type of products | Clothing and Fashion | Paper News and Magazines | 7.75 | <.0001 |
Type of products | Clothing and Fashion | Real Estate | 4.01 | 0.00 |
Type of products | Furniture and Appliances | Groceries | 5.72 | <.0001 |
Type of products | Furniture and Appliances | Travel and Tourism | −6.87 | <.0001 |
Type of products | Furniture and Appliances | Classified Ads Websites | 0.58 | 1 |
Type of products | Furniture and Appliances | Art and Shows | 4.97 | <.0001 |
Type of products | Furniture and Appliances | Cars | 3.81 | 0.00 |
Type of products | Furniture and Appliances | Computers and Electronics | −3.23 | 0.02 |
Type of products | Furniture and Appliances | Leisure Activities | −1.50 | 1 |
Type of products | Furniture and Appliances | Paper News and Magazines | 7.67 | <.0001 |
Type of products | Furniture and Appliances | Real Estate | 3.93 | 0.00 |
Type of products | Groceries | Travel and Tourism | −12.59 | <.0001 |
Type of products | Groceries | Classified Ads Websites | −5.14 | <.0001 |
Type of products | Groceries | Art and Shows | −0.75 | 1 |
Type of products | Groceries | Cars | −1.91 | 0.67 |
Type of products | Groceries | Computers and Electronics | −8.94 | <.0001 |
Type of products | Groceries | Leisure Activities | −7.22 | <.0001 |
Type of products | Groceries | Paper News and Magazines | 1.96 | 0.66 |
Type of products | Groceries | Real Estate | −1.78 | 0.82 |
Type of products | Travel and Tourism | Classified Ads Websites | 7.45 | <.0001 |
Type of products | Travel and Tourism | Art and Shows | 11.84 | <.0001 |
Type of products | Travel and Tourism | Cars | 10.68 | <.0001 |
Type of products | Travel and Tourism | Computers and Electronics | 3.65 | 0.01 |
Type of products | Travel and Tourism | Leisure Activities | 5.37 | <.0001 |
Type of products | Travel and Tourism | Paper News and Magazines | 14.55 | <.0001 |
Type of products | Travel and Tourism | Real Estate | 10.81 | <.0001 |
Type of products | Classified Ads Websites | Art and Shows | 4.39 | 0.00 |
Type of products | Classified Ads Websites | Cars | 3.23 | 0.02 |
Type of products | Classified Ads Websites | Computers and Electronics | −3.80 | 0.00 |
Type of products | Classified Ads Websites | Leisure Activities | −2.08 | 0.52 |
Type of products | Classified Ads Websites | Paper News and Magazines | 7.09 | <.0001 |
Type of products | Classified Ads Websites | Real Estate | 3.36 | 0.02 |
Type of products | Art and Shows | Cars | −1.16 | 1 |
Type of products | Art and Shows | Computers and Electronics | −8.19 | <.0001 |
Type of products | Art and Shows | Leisure Activities | −6.47 | <.0001 |
Type of products | Art and Shows | Paper News and Magazines | 2.70 | 0.10 |
Type of products | Art and Shows | Real Estate | −1.03 | 1 |
Type of products | Cars | Computers and Electronics | −7.03 | <.0001 |
Type of products | Cars | Leisure Activities | −5.31 | <.0001 |
Type of products | Cars | Paper News and Magazines | 3.87 | 0.00 |
Type of products | Cars | Real Estate | 0.13 | 1 |
Type of products | Computers and Electronics | Leisure Activities | 1.72 | 0.85 |
Type of products | Computers and Electronics | Paper News and Magazines | 10.90 | <.0001 |
Type of products | Computers and Electronics | Real Estate | 7.16 | <.0001 |
Type of products | Leisure Activities | Paper News and Magazines | 9.18 | <.0001 |
Type of products | Leisure Activities | Real Estate | 5.44 | <.0001 |
Type of products | Paper News and Magazines | Real Estate | −3.74 | 0.00 |
Device | Using one computer | Using two separate computers | 1.82 | 0.11 |
Device | Using one computer | Using one tablet | 9.02 | <.0001 |
Device | Using one computer | Using two separate tablets | 10.96 | <.0001 |
Device | Using one computer | Using one smartphone | 6.59 | <.0001 |
Device | Using one computer | Using two separate smartphones | −3.85 | 0.00 |
Device | Using two separate computers | Using one tablet | 7.20 | <.0001 |
Device | Using two separate computers | Using two separate tablets | 9.13 | <.0001 |
Device | Using two separate computers | Using one smartphone | 4.77 | <.0001 |
Device | Using two separate computers | Using two separate smartphones | −5.68 | <.0001 |
Device | Using one tablet | Using two separate tablets | 1.94 | 0.11 |
Device | Using one tablet | Using one smartphone | −2.43 | 0.05 |
Device | Using one tablet | Using two separate smartphones | −12.87 | <.0001 |
Device | Using two separate tablets | Using one smartphone | −4.37 | <.0001 |
Device | Using two separate tablets | Using two separate smartphones | −14.81 | <.0001 |
Device | Using one smartphone | Using two separate smartphones | −10.44 | <.0001 |
Location | Remotely from each other | Same location - Bedroom | −7.30 | <.0001 |
Location | Remotely from each other | Same location - Living room | −11.70 | <.0001 |
Location | Remotely from each other | Same location - Kitchen | 1.22 | 0.89 |
Location | Remotely from each other | Same location - Yard | 6.97 | <.0001 |
Location | Remotely from each other | Same location - Garage | 9.29 | <.0001 |
Location | Remotely from each other | Same location - Separate rooms | 0.21 | 1 |
Location | Remotely from each other | Same location - Out of home | 1.83 | 0.40 |
Location | Same location - Bedroom | Same location - Living room | −4.40 | <.0001 |
Location | Same location - Bedroom | Same location - Kitchen | 8.53 | <.0001 |
Location | Same location - Bedroom | Same location - Yard | 14.27 | <.0001 |
Location | Same location - Bedroom | Same location - Garage | 16.59 | <.0001 |
Location | Same location - Bedroom | Same location - Separate rooms | 7.52 | <.0001 |
Location | Same location - Bedroom | Same location - Out of home | 9.14 | <.0001 |
Location | Same location - Living room | Same location - Kitchen | 12.93 | <.0001 |
Location | Same location - Living room | Same location - Yard | 18.67 | <.0001 |
Location | Same location - Living room | Same location - Garage | 20.99 | <.0001 |
Location | Same location - Living room | Same location - Separate rooms | 11.92 | <.0001 |
Location | Same location - Living room | Same location - Out of home | 13.54 | <.0001 |
Location | Same location - Kitchen | Same location - Yard | 5.75 | <.0001 |
Location | Same location - Kitchen | Same location - Garage | 8.07 | <.0001 |
Location | Same location - Kitchen | Same location - Separate rooms | −1.01 | 0.94 |
Location | Same location - Kitchen | Same location - Out of home | 0.61 | 1 |
Location | Same location - Yard | Same location - Garage | 2.32 | 0.14 |
Location | Same location - Yard | Same location - Separate rooms | −6.75 | <.0001 |
Location | Same location - Yard | Same location - Out of home | −5.13 | <.0001 |
Location | Same location - Garage | Same location - Separate rooms | −9.08 | <.0001 |
Location | Same location - Garage | Same location - Out of home | −7.46 | <.0001 |
Location | Same location - Separate rooms | Same location - Out of home | 1.62 | 0.53 |
Screen layout | Same screen - Same website window | Same screen - Multiple website windows open | 10.85 | <.0001 |
Screen layout | Same screen - Same website window | Separate screens - Same shared website window | 7.95 | <.0001 |
Screen layout | Same screen - Same window | Separate screens - Multiple website window | 2.37 | 0.02 |
Screen layout | Same screen - Multiple website windows open | Separate screens - Same shared website window | −2.90 | 0.01 |
Screen layout | Same screen - Multiple website windows open | Separate screens - Multiple website windows | −8.48 | <.0001 |
Screen layout | Separate screens - Same shared website window | Separate screens - Multiple website windows | −5.58 | <.0001 |
Mouse usage | Men | Women | 4.86 | <.0001 |
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Tchanou, A.Q., Léger, PM., Senecal, S., Carmichael, L., Coursaris, C.K., Fredette, M. (2020). Multiuser Human-Computer Interaction Settings: Preliminary Evidence of Online Shopping Platform Use by Couples. In: Stephanidis, C., Marcus, A., Rosenzweig, E., Rau, PL.P., Moallem, A., Rauterberg, M. (eds) HCI International 2020 - Late Breaking Papers: User Experience Design and Case Studies. HCII 2020. Lecture Notes in Computer Science(), vol 12423. Springer, Cham. https://doi.org/10.1007/978-3-030-60114-0_52
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