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Executive control and faithfulness: only long-term romantic relationships require prefrontal control
Ryuhei Ueda1,2, Kuniaki Yanagisawa3, Hiroshi Ashida4
1Graduate School of Letters, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan. ueda.ryuhei.24@gmail.com.
Experimental Brain Research
|January 19, 2018
Summary
Executive control, supported by the right ventrolateral prefrontal cortex (VLPFC), helps regulate interest in outside relationships. This regulation is more crucial for individuals in long-term relationships than those in early stages.
Area of Science:
- Neuroscience
- Social Psychology
- Relationship Science
Background:
- Passionate love characterizes early romantic relationships.
- Executive control, involving the prefrontal cortex, may modulate interest in extra-pair relationships.
- The need for executive control in relationship maintenance might differ based on relationship duration.
Purpose of the Study:
- To investigate the role of executive control, specifically right ventrolateral prefrontal cortex (VLPFC) activity, in regulating interest in extra-pair relationships.
- To determine if the requirement for executive control varies between individuals in early-stage versus long-term romantic relationships.
Main Methods:
- Male participants in romantic relationships underwent functional magnetic resonance imaging (fMRI) while performing a go/no-go task.
- Right VLPFC activity, associated with executive control, was measured during the task.
- Participants completed a date-rating task to assess interest in unfamiliar females.
Main Results:
- Higher right VLPFC activity correlated with better regulation of interest in dating unfamiliar females.
- This association between VLPFC activity and interest regulation was significant only in individuals with long-term partners.
- No significant relationship was found for individuals in short-term relationships.
Conclusions:
- Active regulation of interest in extra-pair relationships is primarily required for individuals in long-term committed relationships.
- The right VLPFC plays a crucial role in maintaining monogamy, with its involvement varying by relationship stage.
- Findings highlight the neural mechanisms underlying relationship maintenance across different stages of romantic involvement.
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