The relationship between line bisection performance and emotion processing: Where do you draw the line?

Area of Science:

• Cognitive Psychology
• Neuroscience
• Art Perception

Background:

• Previous research linked line bisection accuracy to art appreciation, suggesting a shared visuospatial and emotion processing basis.
• This link was hypothesized to stem from overlapping neural networks, particularly in the right temporoparietal region.

Purpose of the Study:

• To investigate an alternative explanation for the link between line bisection performance and art ratings.
• To examine how visuospatial bias, stimulus orientation, and rating scale direction influence art perception.

Main Methods:

• Assessed the relationship between line bisection performance (bias and accuracy) and various art ratings (evocative impact, aesthetics, novelty, technique, closure) in young adults.
• Utilized both visual-analogue and numeric rating scales.
• Manipulated stimulus orientation (mirrored/non-mirrored) and rating scale direction (ascending/descending).

Main Results:

• Left-hand line bisection bias, not accuracy, correlated with most art ratings.
• Line bisection bias demonstrated significant interactions with stimulus orientation and rating scale direction.
• These interactions explained the previously observed relationship between line bisection accuracy and art ratings.

Conclusions:

• The line bisection task is a sensitive indicator of visuospatial attentional biases.
• These biases can influence the rating of asymmetrical artworks.
• The findings suggest that visuospatial biases, rather than accuracy, play a key role in art perception and environmental stimulus processing.