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Inducing Forward Head Posture Recalibrates the Valuation of Future Rewards
Rajal G Cohen1, C Grant Billings2, Colby L Hillend1
1Mind in Movement Laboratory, Department of Psychology and Communication, University of Idaho, 875 Perimeter Dr MS 3043, Moscow, ID 83843-3043, United States.
Forward Head Posture (FHP) increases preference for immediate rewards, impairing self-regulation. This posture shifts decision-making towards short-term gains, impacting future-oriented choices and self-control.
Area of Science:
- Cognitive Neuroscience
- Behavioral Psychology
- Human Self-Regulation
Background:
- Self-regulation, prioritizing long-term goals, is crucial for success.
- Axial postural orientation may influence temporal valuation via proprioceptive feedback.
- Grounded cognition links body posture to cognitive processes like decision-making.
Purpose of the Study:
- Investigate if Forward Head Posture (FHP) affects reward valuation in self-regulation.
- Examine the influence of FHP on future-oriented choices.
- Explore the role of posture in executive function.
Main Methods:
- Healthy adults (N=59) completed a Delay Discounting Task (DDT) and a Simple Reaction Time (SRT) task.
- Participants were assigned to either Forward Head Posture (FHP) or Neutral Head Posture (NHP) conditions.
- Generalized Linear Mixed Models (GLMM) analyzed choice behavior and reward valuation.
Main Results:
- FHP group showed a higher probability of choosing smaller-sooner rewards (p=.004).
- No significant difference in SRT latency between FHP and NHP groups (p=.82).
- FHP selectively impacts executive decision-making, not general processing capacity.
Conclusions:
- Head-neck-torso posture is a significant factor in self-regulation.
- Transient FHP promotes an immediacy bias, affecting executive function.
- Findings have implications for neurorehabilitation and behavioral self-control studies.
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