Predictive visual uncertainty around moving trajectories influences causality judgments in launching displays

Area of Science:

• Psychology
• Cognitive Science
• Perception

Background:

• Michotte's launching displays demonstrate apparent causality in object interactions.
• Disruptions in movement continuation reduce perceived causality.
• The impact of visual uncertainty on trajectory prediction and causality remains under-explored.

Purpose of the Study:

• To investigate the influence of visual uncertainty in trajectory prediction on perceived causality.
• To assess how observers' uncertainty around post-collision movement angles affects causality ratings.
• To explore the relationship between prediction accuracy and causal impressions in launching displays.

Main Methods:

• Observers predicted post-collision movement angles in a trajectory prediction task.
• Causal impressions were rated in a task involving center-to-center collisions with varying movement continuity.
• The oblique effect was utilized by varying launch orientations to manipulate trajectory prediction uncertainty.

Main Results:

• Replicated findings: continuous movement increased causal impressions; deviations decreased them.
• Causality ratings were higher for oblique launch directions compared to cardinal directions.
• Increased sensory uncertainty, indicated by higher prediction errors for oblique launches, correlated with stronger causal impressions.

Conclusions:

• Observer uncertainty around predicted trajectories significantly influences perceived causality.
• Increased sensory uncertainty appears to enhance, rather than diminish, causal impressions.
• Findings suggest predictive processes and sensory uncertainty are crucial for understanding subjective causality.