More About How Slight Variations in Emotional State Affect Decision-Making
By David Hennessy, Clinical Psychologist
Introduction
Even small variations in emotional state can influence decision-making. Emotions shape what we notice, how we weigh risks, and how confident we feel about our choices. This holds true not only for intense feelings like panic or euphoria but also for everyday shifts such as a touch of irritation, a sense of calm, or a low hum of anxiety.
It can be helpful to remember that thoughts are not facts. Emotional states influence interpretation and judgement, rather than objective reality itself.
Evidence From Research
1. Mood-Congruent Processing
People in positive moods are more likely to recall positive information, while those in negative moods recall more negative details. This bias, known as mood-congruent memory, influences the information available during decision-making [1].
2. Risk Perception
Mild anxiety increases the perception of risk and encourages more cautious choices, while positive moods can promote risk-taking. For example, people in positive moods were more willing to gamble in classic laboratory tasks [2]. At times, a gentle grounded truth may be more helpful than overly positive reassurance when reflecting on emotionally driven decisions.
3. Cognitive Flexibility
Positive emotions broaden perspective and encourage creative problem solving, supporting flexible decision-making [3]. Negative emotions can narrow focus, which may assist with detail-oriented tasks but limit broader perspective.
4. Somatic Marker Hypothesis
Emotional signals, often experienced as gut feelings, guide decisions by linking past experiences with present choices [4]. Over time, this contributes to deeper patterns involved in understanding ourselves.
5. Everyday Variability
Laboratory studies show that even minor emotional shifts induced by short films or music reliably alter economic and moral choices [5]. These findings highlight how ordinary emotional variation shapes everyday judgement.
More Recent Evidence
- Mood Fluctuations and Economic Trade-Offs: Everyday mood variations can shift cost benefit trade-offs in decision-making, suggesting that even subtle changes matter [6].
- Emotion-Specific Effects: Different emotions have distinct effects. For example, guilt can make people more risk-averse under certain conditions [9].
- Dynamic Affective Integration: Newer models show that emotions integrate dynamically into value-based judgements, shaping expectations as well as outcomes [7].
- Neuroscience Evidence: Contemporary neuroscience highlights that emotion and cognition are deeply intertwined, functioning as partners in decision processes [8].
Practical Meaning
- Awareness Helps: Recognising when your mood is shaping your choices gives you room to pause.
- Not Always Harmful: Emotions can highlight what matters and add depth to our decisions.
- Gentle Realism: No one makes decisions in a purely rational vacuum. The aim is not to remove emotion but to work alongside it with awareness and balance.
Many people find it helpful to explore how values-based positive affirmations and letting values guide decisions can support steadier choices when emotions feel strong.
Frequently Asked Questions
Do emotions always interfere with good decision-making?
No. Emotions provide important information about what matters to us. Difficulties tend to arise when emotional influence goes unnoticed rather than when emotions are present.
Can small mood changes really affect important decisions?
Yes. Research shows that even subtle emotional shifts can influence attention, risk perception, and confidence, particularly when decisions involve uncertainty.
Should I try to remove emotion from my decisions?
Trying to remove emotion is usually neither realistic nor helpful. A more effective approach is learning to notice emotional influence and balance it with reflection and values.
How can therapy help with decision-making?
Therapy can help people become more aware of emotional patterns, clarify values, and develop skills to pause and respond thoughtfully rather than react automatically.
Enquiries and Appointments
If you would like support exploring how emotions influence your decision-making, you are welcome to make an enquiry or book an appointment at
Hennessy Clinical Psychology
References
- Blaney, P. H. (1986). Affect and memory: A review. Psychological Bulletin, 99(2), 229–246. https://doi.org/10.1037/0033-2909.99.2.229
- Isen, A. M., & Patrick, R. (1983). The effect of positive feelings on risk taking: When the chips are down. Organizational Behavior and Human Performance, 31(2), 194–202. https://doi.org/10.1016/0030-5073(83)90120-4
- Fredrickson, B. L. (2001). The role of positive emotions in positive psychology: The broaden-and-build theory of positive emotions. American Psychologist, 56(3), 218–226. https://doi.org/10.1037/0003-066X.56.3.218
- Bechara, A., & Damasio, A. R. (2005). The somatic marker hypothesis: A neural theory of economic decision. Games and Economic Behavior, 52(2), 336–372. https://doi.org/10.1016/j.geb.2004.06.010
- Lerner, J. S., Li, Y., Valdesolo, P., & Kassam, K. S. (2015). Emotion and decision making. Annual Review of Psychology, 66, 799–823. https://doi.org/10.1146/annurev-psych-010213-115043
- Harlé, K. M., & Yu, A. J. (2023). Mood fluctuations shift cost–benefit tradeoffs in economic decisions. Scientific Reports, 13(1), 19074. https://doi.org/10.1038/s41598-023-45217-w
- Keren, H., et al. (2024). Affective integration in experience, judgment, and decision-making. npj Mental Health Research, 3(1), 12. https://doi.org/10.1038/s44271-024-00178-2
- Phelps, E. A., Lempert, K. M., & Sokol-Hessner, P. (2014). Emotion and decision making: Multiple modulatory neural circuits. Annual Review of Neuroscience, 37, 263–287. https://doi.org/10.1146/annurev-neuro-071013-014119
- Zhang, J., Li, Z., & Liu, Y. (2025). Guilt emotion and decision-making under uncertainty. Frontiers in Psychology, 16, 1518752. https://doi.org/10.3389/fpsyg.2025.1518752 in
