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Author

Nicolas Leins

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#robotics Preprint Feb 2026

Robot Programming with Augmented Reality: The Role of Spatial Ability

Overall, AR did not significantly improve cognitive load or usability compared with conventional instruction, but exploratory analyses revealed a compensatory effect: spatial ability predicted higher usability and lower extraneous cognitive load in the control group, but not in the AR condition, suggesting AR mitigated...

Nicolas Leins, Muriel Fischer, Malte Teichmann et al. · 1 citation
#human-computer interacti... Preprint Sep 2026

Prompting Against Persona Drift: Comparing Intervention Timing and Content in LLM-Simulated Conversations

Simulating student personas with large language models (LLMs) enables scalable evaluation of educational systems. However, behavioral drift, a progressive decline in persona consistency, can emerge over extended conversations, limiting the validity of such simulations. We evaluate five prompt-level mechanisms using sep...

Nicolas Leins, Jennifer Haase, Varvara Geronimus et al. · 0 citations

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