Reading direction causes spatial biases in mental model construction in language understanding

Area of Science:

• Cognitive Psychology
• Linguistics
• Neuroscience

Background:

• Reading and writing directionality correlate with spatial biases in perception and conceptualization.
• Experimental evidence is needed to establish causality between script direction and spatial biases.

Purpose of the Study:

• To determine if script direction is a sufficient cause for spatial biases in mental models constructed from auditory language.
• To investigate the causal link between manipulated reading directionality and subsequent spatial arrangements in mental models.

Main Methods:

• Spanish monolinguals were exposed to texts with varying directionalities: normal (L-R), mirror-reversed (R-L), rotated downward (U-D), and rotated upward (D-U).
• Participants then drew representations of auditory descriptions (e.g., 'the square is between the cross and the triangle').
• The directionality of these drawings was analyzed to assess mental model construction.

Main Results:

• Brief reading experience with specific script directionalities induced congruent and specific spatial biases in mental model construction.
• Participants showed a strong preference for arranging mental models along the horizontal dimension, indicating limits to directional flexibility.
• Both short-term and long-term biases contribute to spatial preferences in language comprehension.

Conclusions:

• Script directionality can causally influence the spatial biases in mental models formed during language processing.
• The impact of reading direction on mental models is specific but constrained by a general horizontal preference.
• Understanding these biases is crucial for comprehending how language shapes thought.