Human-Computer Interaction

CBRE, Inc http://www.cbre.com

CBRE operates as a commercial real estate services and investment company website. The website is an informational and ecommerce website for visitors where they can find links to properties and can accessed the best deals. The main links are About Us, services; Find a Property, Global Research and Consulting, Our People, Investor Relations as well as Careers. These links connect to both external websites and new portals. Some of the links redirect to some pages in the website. The links are located below the header and at the bottom of the website.

Host Hotels & Resorts, Inc. www.hosthotels.com

Host Hotels & Resorts is a publicly owned real estate investment trust (REIT). The firm primarily engages in the ownership and operation of hotel properties: the company website is a museum website that is also an informational website for visitors. It has links located below the headers of the website Home, News Releases, Our Company, Investor Relations, Our Properties, Careers, Site Map, Contact Us, and Terms of Use.

Comcast: www.comcast.com

Comcast Corporation operates as a media and technology company worldwide. It operates through Cable Communications, Cable Networks, Broadcast Television, Filmed Entertainment, and Theme Parks segments. The Comcast website is an ecommerce website. It is also an informational and product promotional website. It has links located at the bottom of the website and at the header: Follow us for exclusive deals, Find tutorials and demos, Connect on Facebook

General interactivity

The website is all-interactive considering the fact that two of them are commercial website. It is also important to note that the Host Hotels & Resorts, website is more interactive because it has java script coding that can be seen from its source code (Parsons, &, Sedig, 2012). The Host Hotels & Resorts has sliders, and drag and dropping is not enabled. One can easily pick data and select goods to move to the shopping cart. On the other hand, the Comcast website has a radio button and number of hyperlinks to other web pages, it also has deadly finders as well as tabs for different category of products. The most interesting thigh about the Comcast website is that it has only dew products per webpage, and all other products displayed on the side bar are linked to other web pages. However, the three website have news and contact use tabs for visitors and shoppers.

The terms and condition are only displayed on the Host Hotels & Resorts, and Comcast website, but the CBRE website does not have any terms and condition on the home page the most common software used in all there three website sir he adobe flash, and Microsoft silver light. The interaction models used in all the three sites makes interactivity easy using any device from smart phones, tablet and computers. The entire three website has links at the bottom of the website and a site map to aid the users of the website. Interaction is enhanced for a number of commercial websites, and they are customizable based on ones interest and preferences. Interactivity is also improved by their integration with the social media as one can easily Log in into their accounts with their Facebook pages of email addresses

Cognitive factors.

The Comcast website has improved cognitive usability because they have used human factors to influence their website interaction. For example, there are custom xml tags have helped the companies improve interactivity. The website also uses cognitive factors such as accuracy and task completion time to enhance interactivity. The other cognitive factors such as long term memory, processing speed, fluid intelligence, as well as intent confidence and intent usage has been realized through SSL, and other security seals. The main website factors include scrolling and paging external and internal links, there are forms and written contents. Additionally, each website has its own unique page layout, images, bold headings and navigation panels

Mental models

The mental model explains the impact of the user interface on the overall user experience. For example, the mental models or user’s through processes affect the way they interact with the website (Liang, Parsons, &, Sedig, 2010, pp. 5–45). In most cases, while using the Comcast website, there are Mismatched mental models because the perceived ease of use of the website. It is the held belief that the website is professional and secure that influences their decision to use their credit cards in some website or allow accepting cookies from the websites. Everyone has his own perception of websites, therefore when the website does not work as anticipated, problems and negative perception develops (Gedig, Parsons, &, Babanski, 2012, pp. 12–28)

Universal design principles

Design hierarchy is achieved in the Comcast website by use of color and shapes to influence the users differently. On the other hand, the real estate website has a call to action button, while the CBRE website has a junior key and search website button for ease of indexing and search. The other universal design include divine proportions that guides the layout of the website, each website has its own layout for products. Some use three columns while some proportionate numbers. Finally, the design principles used is the law o symmetry and law of closure that gives shapes when nothing is clear. The website uses can also make mental pictures of the website and the content by looking at the pictures alone. Finally, they have used then whiten space and clean design

Learnabilty and efficiency

Learnabilty refers to how well the system helps the user avoid making errors, or recover from errors. For using the website, the Comcast has higher sighed learn ability than the real estate sites because it is not easy to make an errors as the system detect the error and alerts the user.

References

Gedig, K.; Parsons, P.; Babanski, A. (2012). "Towards a characterization of interactivity in visual analytics". Journal of Multimedia Processing and Technologies, Special Issue on Theory and Application of Visual Analytics 3 (1): 12–28. Retrieved July 29, 2013.

Parsons, P.; Sedig, K. (2012). "Adjustable properties of visual representations: Improving the quality of human-information interaction".Journal of the American Society of Information Science and Technology.

Liang, H.-N.; Parsons, P.; Wu, H.-C.; Sedig, K. (2010). "An exploratory study of interactivity in visualization tools: ‘Flow’ of interaction". Journal of Interactive Learning Research 21 (1): 5–45.

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