The gaze-and-pinch framework offers a high-fidelity interaction modality for spatial computing in virtual reality (VR), yet it remains vulnerable to coordination errors--timing misalignments between gaze fixation and pinch gestures. These errors are categorized into two types: late triggers (gaze leaves a target before pinch) and early triggers (pinch before gaze arrival on target). While late triggers are well-studied, early triggers lack robust solutions. We investigate two heuristics--STICKY selection (temporal buffer) and MAGNETIC selection (spatial field)--to mitigate these errors. A within-subjects study (N = 9) on the Samsung Galaxy XR evaluated these heuristics against a baseline. Findings indicate that while throughput and selection time remained stable, the heuristics fundamentally shifted user behavior and significantly reduced errors during selection. Notably, MAGNETIC selection induced an "offloading" effect where users traded precision for speed. Additionally, the heuristics reclassified ambiguous failures as explainable coordination errors. We provide recommendations for selection heuristics that enhance interaction speed and cognitive agency in virtual reality.

翻译：注视-捏合框架为虚拟现实（VR）中的空间计算提供了一种高保真交互模式，但该框架仍易受协调错误的影响——即注视固定与捏合手势之间的时序错配。这些错误分为两类：延迟触发（注视在捏合前离开目标）与提前触发（捏合在注视到达目标前发生）。尽管延迟触发已得到充分研究，但提前触发缺乏稳健的解决方案。我们探究两种启发式方法——粘性选择（时间缓冲）与磁吸选择（空间场）——以缓解这些错误。在三星Galaxy XR上开展的受试者内研究（N=9）评估了这些启发式方法与基线方法的对比效果。结果表明，尽管吞吐量和选择时间保持稳定，但启发式方法从根本上改变了用户行为，并显著减少了选择过程中的错误。值得注意的是，磁吸选择引发了“卸荷”效应——用户以精度换取速度。此外，这些启发式方法将模棱两可的失败重新归类为可解释的协调错误。我们针对能够增强虚拟现实中交互速度与认知自主性的选择启发式方法提出了建议。