Leituras

(Lin e Lu, 2000)

Porque é que um utilizador aceita ou rejeita uma página na internet e quais as características que influenciam isto.

Uma das caracterísitcas da Internet é a interactividade (Butler & Peppard, 1998; Ghosh, 1998; Palmer & Gri$th, 1998; Peterson, Balasubramanian & Bronnenberg, 1997). 

Because of the character of interactivity, the customer-oriented marketing concept presented by Kotler (1967) is no longer a mirage.With the use of the Internet, many traditional business concepts need to be rephrased. Due to the many-to-many communication (Ho!man & Novak, 1997), customer’s power has grown while the "rm’s declines (Bakos, 1997; Benjamin &Wigand, 1995; Kozinets, 1999; Rayport & Sviokla, 1994, 1995) 

 User’s perceptions of a Web

The user’s perceptions of a Web site are considered by applying the technology acceptance model (TAM, Davis, 1989; Davis, Bagozzi & Warshaw, 1989). TAM has been widely used to

predict the acceptance of a new technology, such as the acceptance of new software packages. It postulates that the two variables, perceived usefulness and perceived ease of use, have great

relevance to technology acceptance behaviours. Studies subsequent to Davis (1989) suggest that TAMyields highly consistent result on the acceptance behaviour of the users towards new systems in the o$ce environment (Abdul-Gader, 1996; Adams, Nelson & Todd, 1992; Chin & Gopal, 1995; Gefen & Straub, 1997; Igbaria, Guimaraes & Davis, 1995; Lu & Yeh, 1998; Mathieson, 1991; Szajna, 1994, 1996). Though some researches further modi"ed the TAM recently and extended its application to the Internet arena (Agarwal & Prasad, 1997; Teo, Lim & Lai, 1999), the related studies of the usage behaviour in the Internet environment is still primitive. It is not clear as to what external variables would a!ect the usage behaviour and intentions.

According to TAM, user’s perception about aWeb site is de"ned by beliefs (subjective probabil-

The response time of a web page has  a strong influence on the perceived ease of use of one site.

The information quality has a strong ith the perceived usefullness and has a stronger influence on causing people to return than the speed of the page

 

(Lindgaard e Chattratichart, 2007)

Suggest that the  focus  be  shifted  to  task  coverage on Usability tests.

The  paper  calls  for  more research into the role of user tasks on improving usability testing  approaches  as  well  as  into  the  importance  of  recruitment of test users. 

(Fang e Holsapple, 2007) 

Results show that a usage-oriented hierarchy or a combined hierarchy is a navigation structure associated with significantly higher usability than subject-oriented hierarchies, for both simple and relatively complex knowledge acquisition tasks 

Five classes of features have been identified as joint contributors to Web site usability: task features, user features, provider features, system features, and environment features