Systematic transition from boundary extension to contraction along an object-to-scene continuum

Area of Science:

• Cognitive Psychology
• Environmental Psychology
• Visual Perception

Background:

• Memory recall of environments often extends beyond presented visual information, a phenomenon known as boundary extension.
• Conversely, boundary contraction, where memory shrinks the perceived environment, also occurs, but its relationship with boundary extension is debated.
• Understanding these memory errors is crucial for comprehending visual perception and spatial memory.

Purpose of the Study:

• To investigate the relationship between boundary extension and boundary contraction across a continuum of environmental views.
• To determine the factors influencing the transition point between boundary extension and boundary contraction.
• To propose a unified mechanism explaining both memory phenomena.

Main Methods:

• Creation of virtual 3D environments with views varying from object close-ups to wide-angle scenes.
• Testing for memory errors (boundary extension vs. contraction) across this object-to-scene scale continuum.
• Analyzing the transition point in relation to environmental features and subjective judgments of the 'best-looking' view.

Main Results:

• Boundary extension occurred for close-scale views, transitioning to boundary contraction for far-scale views.
• The transition point was not fixed to a specific environmental location but correlated with the observer's judgment of the most aesthetically pleasing view.
• This parametric shift was observed in both object-rich and object-poor environments.

Conclusions:

• Boundary extension and boundary contraction are not distinct phenomena but represent a continuum of memory errors.
• A dynamic-tension account, balancing object-based and scene-based affordances, explains the shift between extension and contraction.
• The observer's subjective judgment of the 'best-looking' view critically influences memory recall of environmental boundaries.