Necker cube reversals, arousal and psychopathy

Area of Science:

• Psychology
• Neuroscience
• Criminology

Background:

• The Necker cube is a classic example of a bistable visual perception.
• Perceptual reversals, like those of the Necker cube, can be influenced by cognitive and emotional states.
• Stress is known to affect cognitive functions, including attention and perception.

Purpose of the Study:

• To investigate the impact of varying stress levels on Necker cube reversal rates.
• To examine the stability of Necker cube reversal rates under sustained and acute stress.
• To explore the relationship between Necker cube reversal rates and psychopathy in an incarcerated population.

Main Methods:

• Twenty-four incarcerated men participated in three experimental sessions.
• Sessions were conducted at two weeks, one week, and immediately before trial, representing increasing stress levels.
• The rate of apparent change (RAC) of the Necker cube was measured in each session.
• The Gough delinquency scale was used to assess psychopathy-related traits.

Main Results:

• No significant changes in the rate of apparent change (RAC) of the Necker cube were found across the three stress conditions.
• Intra-individual stability of RAC was notably high.
• Significant positive correlations were observed between RAC and the Gough delinquency scale across all sessions.

Conclusions:

• Sustained and acute stress, as experienced by incarcerated individuals, did not alter Necker cube reversal rates.
• The rate of apparent change in Necker cube perception demonstrates high stability even under significant stress.
• A correlation exists between Necker cube reversal patterns and psychopathy indicators in this population.