Naslov
Mental Rotation in Virtual Reality Test

Autori
Vuk, Saša ; Vičević, Vibor ; Štalec, Vitomir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Kinesiology - new perspectives / Milanović, Dragan ; Prot, Franjo - Zagreb, 2002, 640-643

Skup
3rd International Scientific Conference

Mjesto i datum
Opatija, Hrvatska, 25.09.2002. - 29.09.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
virtual-reality; skydive formations; mental rotation; decision-making

Sažetak
Mental rotation is a very important spatial capacity for many occupational and sports activities (gymnastics, rhythmics gymnastics, team sports, etc.), as well as in many other situations in which one has to perceive the motion, to locate physical objects in 3-D space and to perceive the position of one's own body in this space in order to make a decision about the action to be taken. The goal of this paper was to determine whether it was possible to assess the size of MR in the various tasks of one test that had been constructed by using virtual-reality (VR) technology. The authors of the applied test and tasks which to a large extent simulate one sports activity (skydive 4-WAY) are Viskić-Štalec and Katović (2001). According to the authors "one jump consists of as many repetitions of the drawn combinations of figures (random static-figures and block-sequences-rotations) as a team can perform during free fall''. The task set before the examinees was to remember as many details of a 4-member skydive formation as possible. These details may then help to discover the correct answer. The whole test is comprised of 25 various tasks, that is, of various skydive formations in various aspects of motion. These formations differ from one another by the position of the skydivers within a formation, by the form, direction of movement of the formation members and by other factors the purpose of which is to make it difficult for an examinee to solve the test tasks (with different movements and formation rotations). Each formation image is visible for only 6 seconds. The examinee may choose between four multiple choice answers that are at his/her disposal of which only one is correct. The method of decision-making about the value of task difficulty was employed for the purpose of data processing. By means of the AHP (Analytical Hierarchy Process) procedure the ponders for each task and for each judge who determined the level of the engagement of MR in each task were calculated. The ponders for each task and for each judge (five independent experts) who determined the level of engagement of mental rotation in each task were calculated. These ponders served to rank the test task difficulty. Thus the task which would be the most difficult one for the examinees as regards the selection of a correct answer could be identified. This research has proved that it is possible to assess the amount of MR in the various tasks of test. It was proved that it is the new information technology of virtual reality that makes it possible to devise artificially created worlds and situations and that helps to achieve a higher quality experience of participants and immersion in 3-D space, consequently accomplishing a higher quality of assessment of situations in contrast to those provided by classical ways of measurement that are limited by two-dimensionality, static quality and time.

Izvorni jezik
Engleski

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