Questionnaires and web trials are explore methods that use the internet as a means to collect data and are thus often used in place of traditional lab-based trial and error designs. They have been around since the days of the net (World Huge Web, short: web) and were able to develop rapidly simply because the Internet progressed and became extensively available (Skitka & Sargis, 2006).

Web questionnaires and web experiments are useful to get collecting huge participant crowded at reduce administrative costs than would be possible within a lab. Nevertheless, these advantages are often counterbalanced by troubles that can come up when using the net as a great experiment venue. Birnbaum (2004) highlights some common pitfalls, which includes incorrect code and erroneous data collection due to the way HTML varieties work (e. g., assigning the same adjustable name to form components, for example , into a questionnaire item asking regarding sex and one seeking sex frequency).

Other challenges can also occur, including drop out and differences in motivation between individuals. The latter could be particularly difficult because, simply because pointed out by Reips (1999, 2002b), it might be possible to interpret between-condition effects although the same participants were confronted with numerous stimuli inside the same research.

Fortunately, a large number of techniques and detailed solutions are available to stop these potential problems and perhaps to turn all of them in to advantageous top features of web testing. The software software OpenSesame, for example, makes it easy to construct and run complex behavioral experiments over the internet without the need for customized programming expertise.