Experiment 29: A re-implementation of Vandenberg and Kuse’s Mental Rotation Task (1978).


Desc: Vandenberg and Kuse’s Mental Rotation Task (1978) is a common test measuring mental rotation ability. It is often claimed that there are gender differences between participants.

Classification: Mental rotation; Rotation of Blocks

Link: http://webexperiment.iig.uni-freiburg.de/mental_rotation/



Experiment 28: A re-implementation of (Ekstrom et al. 1976) Hidden-Figure-Test to test object identification.


Desc: The Hidden-Figure-Test is  used as a measure of spatial orientation skills. The task is to identify geometric forms that are hidden in a complex visual configuration. It requires to eliminate irrelevant information as drawing, and often rotation, and concentration.

Classification: Geometric form identification; elimination of irrelevant spatial information.

Link: http://webexperiment.iig.uni-freiburg.de/hidden_figures/



Experiment 26: The Map-Self-Localization Test (MSLT)


Desc: This experiment presents participants with abstract map-like drawings and cut-outs. Participants have to find the cut-outs in the map. To successfully solve the map-like problems participants require a number of specific mental sub-processes, such as mental rotation, angle or mirror discrimination.

Classification: Reasoning with maps;  Visual stimuli; decision task




Experiment 24: Webstudy for Nonmonotonic Logics



Desc: The experiment tests if humans use weak completion or well-founded semantics and how they deal with positive cycles in logic programs. While in a well-founded model atoms involved in positive cycles are false, they are mapped to unknown under the weak completion semantics. In order to determine which semantics is more adequate for human reasoning, it is necessary to investigate which conclusions are typically drawn by human reasoners with respect to cyclic conditionals. The results of the psychological study have been published (Dietz, Hölldobler, & Ragni, 2013).

Classification: Nonmonotonic Reasoning; contradictions; conditional reasoning; well-founded semantics



Exp 23: Webstudy to identify emotions. Participants have to rate Ekstrom’s facial-expressions


Desc: This experiment tests how participants rate given facial expressions according to a list of emotions. The goal is to test, how good participants are able to identify specific emptions in given facial presentations.

Classification: Rating of facial expression’s; Ekstrom’s Emotion rating



Exp 2: A webstudy about reasoning with cardinal directions (Verbal Information)


In this experiment we presented participants with verbal descriptions about cardinal directions of three stimuli. One third of the problems were determinate (i.e., allowing only for one arrangement), one third indeterminate (allowing for more than one possible arrangement), and one third with negated spatial information (implying as well an indeterminate arrangement). The results show an increase in reasoning difficulty (i.e., error rates from determinate over indeterminate to negated relations), but are slightly different to the first experiment in the accepted arrangements.

Classification: Arrangements of three objects; Verbal presentation (English); Large-scale relations

Link: http://webexperiment.iig.uni-freiburg.de/sr_frmi_text/sr_frmi_text.html