Question

Human-Computer Interaction

Compare and contrast controlled psychological experiments and usability tests in the evaluation process of user interfaces. Be sure to include the benefits and limitations of each.

Answer 1

compare and contrast controlled psychological experimend and usability tests. → Psycological experiment: In a psycological experiment, the method of testing the interface as more empiricale one gathers evedence for or against the usability of the interface through surveys and other techniques. and it is harder to use this experiment because you have to find very specific things about the interface to test and sample of users who match the demographic of users who will see the interface. some Advantages & disadvantages of psycological experiment Advantages Disadvantages Gain insight into method of sy It suffers from the potential e instruction. of human errors. e intuitive practice shaed by it is a time consuming e search. I process to endure. kumans It offers the It creates unrealistic situation highest level of control that still receive validity. a) It is used in every industry It struggles to measure human e and subject responses. a It offers results which can It does not create always occur repetitively. an objective view. It gives conclusion which ex It can't always control all are specific. . It works with other methods tolanned with scanner

comparision of usability test with psycological experiment > Usability tests. In a usability test, however, the ' tests are more subjective, one can ask the user, "Did you enjoy using the interface, for example. However usability tests are less empirical. Advantages: they allow you to gather in depth in formation about user's behaviour - It rely on evaluation of what users actually do, rather than what they say they do. dis advantages:- -> It is costly in terms of facility and equipment and also staff time. = they are usually only possible to undertake with a small sample of potential users. =) The data can be fairly complex and time consuming to analyse. It requires a significant commitment by participants. th