Close to the same: Similarity influences remembered distance between stimuli

Area of Science:

• Cognitive Psychology
• Human Memory
• Perception

Background:

• Spatial memory is crucial for navigation and understanding environments.
• The relationship between object similarity and spatial memory has been an area of interest.

Purpose of the Study:

• To investigate whether the degree of similarity between objects influences spatial memory.
• To determine if similarity biases the perceived distance between objects.

Main Methods:

• Six preregistered studies were conducted.
• Correlational analyses examined the relationship between perceived similarity and remembered distance.
• Experimental manipulations of similarity were used to establish causality.

Main Results:

• A consistent bias was observed: higher object similarity led to the perception of smaller spatial distances.
• This effect was evident for both conceptual and perceptual similarity.
• Causal evidence confirmed that manipulating similarity experimentally replicated the correlational findings.

Conclusions:

• Object similarity significantly biases spatial memory reconstruction.
• The perceived spatial arrangement of objects is influenced by their degree of similarity.
• Findings apply across various stimulus categories and dimensions of similarity.