Online group-buying means that a crowd of consumers combine with each other and massively purchase a certain object, and therefore can attain to a lower price(Kauffman et al. 2002). In group-buying transaction model, consumers usually recognized the risks specially. Therefore, the feedback mechanisms were used to reduce the risks and increase the trust. In general electronic shopping, many past studies especially explore the use of feedback mechanisms(Dellarocas 2003; Singh et al. 1991). However, there are few studies about the effect of feedback mechanisms on online group-buying. Compare to general electronic shopping, shopping in group-buying will include more uncertainty and risk. Thus, this study will use experimental methodology to explore the feedback mechanisms that how to impact the behavior of group-buying consumers with forum and rating feedback mechanisms. Our study mainly explores whether the feedback mechanisms affect the consumers¡¦ trust in seller¡¦s credibility and perceived risk in group-buying, and whether the intention to join group-buying is influenced by the trust in seller¡¦s credibility and perceived risk. The study shows that the online group-buying consumer behavior is influenced by the feedback mechanisms exactly. The ratings affect consumers¡¦ perceived financial risk, perceived time risk and perceived psychological risk. The forum affect consumer¡¦s psychological risk perceived, and the experience of the initiator who initiates group-buying also affect the consumer¡¦s time risk perceived. The intention to join group-buying is influenced by the trust in seller¡¦s credibility and perceived risk.

Datorkraft och hastighet har på senare år ökat exponentiellt, men våra förväntningar och mentala modeller om vad datorsystem är kapabla till har inte följt med. I fall där människor inte tror på att systemet kan utföra de uppgifter som begärs så snabbt som de gör kan artificiell väntan appliceras för att förväntningarna ska komma närmare verkligheten. Syftet med denna studie är att undersöka ifall security theater fungerar i kontexten av bankapplikationer och vad som händer med användarens förtroende ifall illusionen av säkerhet brister. Genom denna undersökning har vi fått fram att security theater är ett fenomen som fungerar och tillför ett värde för användaren. Dock ska kontexten ifråga utvärderas noggrant, då security theater i fel kontext kan ses som ett störande moment. Vi kom fram till att majoriteten av testpersoner inte påverkas negativt, och istället ser security theater som ett värde även efter illusionen genomskådats. / Computer power and speed have increased exponentially in recent years, but our expectations and mental models of what computer systems are capable of have not kept up. In cases where people do not believe that the system can perform the requested task as quickly as they do, an artificial wait can be applied to closer match the reality. The purpose of this study is to investigate whether security theater works in the context of banking applications and what happens with the users trust if the illusion of security fails. Through this paper we have found that security theater is a phenomenon that works and adds value to the user. However, the context in question must be carefully evaluated, as security theater in the wrong context can be seen as a disturbing element. We came to the conclusion that the majority of our test subjects are not negatively affected, and instead sees the value in security theater even after the illusion have been revealed.