Manipulation Checks

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Manipulation checks are defined as a process that is used to verify if the experiment worked or works. Most manipulation checks are imbedded into the experiment others are included at the end of the experiment during debriefing. Manipulation checks as well vary by research. A manipulation check done in a lab setting differs from a manipulation check in a clinical research. Manipulation checks are necessary for the validity of the experiment as well as essential if the data does not support the hypothesis. In some experiments the use of a survey or evaluation sheet is used in order to note the difficulties that the participants might have had in the experiment. In clinical research most manipulation checks are embedded into the experiment for ease and validity.


Manipulation checks are seen in the video. However it is unclear. This particular experiment can be categorized as a clinical experiment but it does have lab settings. So is unclear as least in my eyes as to which particular setting it is. If it was categorized as a lab setting then there was no use of debriefing. It is evident that the participant was not debriefed at the end of the experiment. From a clinical research perspective the manipulation check could have been embedded into the experiment. This is somewhat evident. Participants are able to log on to Second life from various locations, so it is really unknown what category this experiment falls under. There is no use of debriefing and it is unclear if it is embedded within the experiment.

However it is clear that manipulation checks are necessary for the validity of the experiment. Within the experiment there was constant comparison of Second Life to real life. The individuals in Second Life perform some of the same tasks that are seen in real life. Distance and looking away during conversation are clearly seen in everyday life as well as in Second life. There is a distance proximity that individuals feel comfortable with. When a person invades their personal space they feel uncomfortable. This is clearly demonstrated in Second Life, which is also apparent in real life.

In the experiment when one individual was invading the others personal space they felt uncomfortable and started walking away, as well as looking away. The same applies to eye contact. People feel awkward when another individual stares at them, yet it also depends on the sex of the individual. If two males stare at each other and are close to each other the awkwardness is high. However, if it is a male and a female the awkwardness decreases.

These aspects are clearly seen in everyday life. If you get to close to an individual the individual will walk away. If you stare too long at an individual they look away. The manipulation check in the experiment is clearly valid.

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