Understanding your fears

In the past, Halloween has meant the end of the crop and the start of the dark, cold winter. People know this time of year as the "season of death." The Celts thought that the line between the living and the dead became less clear at this time of year. People believed that the spirits of the dead returned to earth on the night of Samhain, which occurred around October 31 [1].

For Druids, villages would host large fires. As night fell, groups of people dressed in animal skins would gather, sometimes engaging in rituals and sacrifices to their gods [1]. Over the years, this once fear-associated period has transformed into one of the busiest times of the year for businesses. It is now a time to celebrate fear.

Fear itself is deeply wired into our nature, having evolved to protect our ancestors from threats to survival [2]. Similar to other animals, we often learn fear through direct experience (e.g., being attacked by an aggressive dog) or observational learning (e.g., witnessing such an attack) [3]. However, humans possess an evolutionarily distinctive mechanism: we can learn fear through instruction, via language. For example, a warning sign such as “beware of the dog” can elicit fear without direct experience [4]. Historically, storytelling likely served as a mechanism to teach children about dangers in their environment. Over time, such stories also became a means of exploring existential concerns and internal conflicts. In this sense, monsters can be understood as symbolic representations of aspects of ourselves [5]. Many important lessons are conveyed through narratives that evoke fear.

People in modern society often perceive themselves as living in relatively safe environments, yet threats persist. In contemporary contexts, fear has become commodified. Controlled fear experiences, such as horror films or haunted attractions, provide manageable “packages” of fear. These experiences can be both thrilling and, in some cases, habit-forming due to their activation of reward-related systems [6]. Novel and intense experiences are known to activate dopaminergic pathways associated with reward and motivation [7].

The fear response begins in the brain and spreads throughout the body in preparation for a “fight-or-flight” reaction. It is initiated in the amygdala, an almond-shaped structure in the temporal lobe responsible for detecting emotionally salient stimuli [8]. This activation primes motor systems involved in defensive behaviours and triggers the sympathetic nervous system, leading to the release of stress hormones such as adrenaline and cortisol [9]. Physiological changes include pupil dilation, bronchodilation, increased respiration, elevated heart rate and blood pressure, and increased glucose availability to skeletal muscles. Non-essential systems, such as digestion, are downregulated [9].

Simultaneously, the hippocampus and prefrontal cortex contribute to higher-level processing, evaluating context and determining whether a threat is real [8]. Under acute fear, prefrontal cortical function can be impaired, reducing rational decision-making capacity and shifting behaviour toward rapid, defensive responses [10]. This is why individuals may struggle to make complex decisions when afraid or under sudden stress.

Fear is also shaped by our social nature. Emotional responses can be shared and amplified within groups, a process known as emotional contagion [11]. When individuals experience fear together in a safe context, they can reappraise the situation, transforming fear into enjoyment. This reappraisal contributes to a sense of control and mastery [12]. For example, individuals may quickly transition from fear to laughter when they recognise that a perceived threat is harmless.

Various factors—including social context, learning history, and attentional focus—modulate fear responses. A key common factor is the perception of control [12]. Individuals differ in what they find frightening or enjoyable, reflecting variability in how cortical regulatory systems modulate subcortical emotional responses [10]. For example, one may cognitively recognise that vampires are fictional yet still experience fear in response to other stimuli such as zombies. Predictability and perceived realism also influence emotional responses [13].

While fear can be adaptive, excessive fear and anxiety can lead to significant distress and dysfunction. Anxiety disorders, including phobias, social anxiety disorder, generalised anxiety disorder, separation anxiety disorder, post-traumatic stress disorder (PTSD), and obsessive-compulsive disorder (OCD), are common, often beginning early in life [14]. Lifetime prevalence estimates suggest that a substantial proportion of individuals experience these conditions, with PTSD affecting a notable minority [15]. These disorders can arise following stressful or traumatic events but are treatable through psychological and pharmacological interventions [14].

Fear is also linked to superstition, which can provide a perceived sense of control over uncertain situations. Superstitious behaviours may reduce anxiety and, in some cases, improve performance by increasing confidence [16]. Experimental evidence shows that rituals or lucky phrases (e.g., “good luck”) can enhance task performance by boosting self-efficacy [16]. However, excessive reliance on ritualised behaviours can contribute to maladaptive patterns resembling OCD, including compulsive checking, washing, and repetitive actions [14].

Monsters and myths reflect cultural evolution and shared fears. Stories of zombies, vampires, and genies originate from different regions, including West Africa, Eastern Europe, and the Middle East. These narratives evolve over time and often reflect societal anxieties. For instance, fictional monsters have been interpreted as symbolic responses to emerging technologies or historical events [5].

Regardless of whether fear is avoided or sought out, it is widely recognised and even celebrated, as seen in Halloween traditions. Interestingly, some neurochemical systems involved in fear responses, such as those involving adrenaline and dopamine, also contribute to positive emotional states, including excitement and pleasure [6]. This overlap may explain why controlled fear experiences can feel enjoyable. The distinction between a pleasurable ‘rush’ and overwhelming fear often depends on context, perceived control, and individual differences.

Despite the popularity of fictional fears, real-world fears remain prominent. Surveys consistently show that common fears include heights, public speaking, animals (e.g., snakes), drowning, and medical procedures involving blood or needles [17]. While not all of these pose significant threats to survival, they are often perceived as highly dangerous. Broader societal concerns, such as corruption or cyber threats, also feature prominently in public perception of risk.

References

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