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Subject: task difficulty

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    Conference Object
    Citation - Scopus: 1
    An Investigation on Task Difficulty: Does Task Difficulty Depend on the Technology Used in Task Completion?
    (Association for Computing Machinery, Inc, 2024) Akgun,M.; Toker,S.
    Previous research indicates that task difficulty (i.e., students' judgments on a task's complexity) impacts their task performance. However, whether students' perceived task difficulty changes depending on the technology they use when completing tasks is still under investigation. The present study aims to address this gap in the literature. One hundred twenty-three students completed the study procedures. Students were randomly assigned to one of four groups (one control group and three experimental groups). Students were not allowed to use any technology in the control group. In contrast, those in experimental groups were permitted to use one of the following tools: e-textbook, Google, and ChatGPT. Students in each group completed three tasks with different complexities in the same order. The data was analyzed using repeated-measures ANOVA. The study revealed a significant interaction effect between groups and task difficulty perceptions at three levels. In all groups, perceived difficulty increased as the task complexity increased, but the change in students' perceived task difficulty across three tasks was impacted by the tool used when completing the tasks. © 2024 Owner/Author.
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    Article
    Citation - WoS: 16
    Citation - Scopus: 15
    Using Eye-Movement Events To Determine the Mental Workload of Surgical Residents
    (int Group Eye Movement Research, 2018) Dalveren, Gonca Gokce Menekse; Cagiltay, Nergiz Ercil
    These days, eye-tracking is one of the promising technologies used in different fields such as aviation, arts, sports, psychology and driving for several purposes. Even though it is being used for health purposes, studies involving eye-tracking are rare in the field of endo-neurosurgery. This study aims to use this technology to promote our understanding of the effect related to computer-based instructional materials on mental workload of endo-neurosurgery residents. Four computer-based simulation scenarios are developed based on skill development requirements of endo-neurosurgery residents. Two of them were designed as general models and the other two as simulated surgical models. During these surgery procedures, in real settings, surgical residents need to use their both hands simultaneously to control the endoscope and the operational tool in a coordinated fashion. Therefore, to shed light on the participants' behaviors, these scenarios are performed with dominant-hand, non-dominant hand and, finally with both-hands using haptic interfaces. Twenty-three residents volunteered in this study. Their eye-movements were recorded while performing the scenarios. According to the results of this study, when performing the simulated surgical models, an increase in the participants' mental workload was recorded when compared to the other scenarios. Accordingly, it can be concluded that the eye-movements of surgical residents can provide insights about the anticipated level of difficulty about the skill-based tasks. This information might be very critical to properly design and organize instructional materials for endo-neurosurgery, and also to better guide and evaluate the progress of trainees in computer simulation-based skill training environments.