Brain-Based Motivation
B.U.C(k).E.T.
The B.U.C(k).E.T. model, developed by Susan Fiske of Princeton Unviersity, describes five motivational domains in social interactions that, when triggered, activate primal and automatic Approach or Avoidance responses. Individually, people may react more strongly to some domains than others. The five domains seldom work independently from each other, but looking at each of them separately helps us to tease apart the complicated primal motivations driving our behaviors.
Explore the B.U.C(k).E.T. domains below.
Reward vs Threat
Human beings evolved in environments where survival depended on quickly identifying danger, protecting resources, and staying connected to the tribe. As a result, the brain is wired to maximize reward (Approach) and minimize danger (Avoidance). In modern society, however, social interactions like political disagreements, criticism, exclusion, or uncertainty can activate the same threat systems once reserved for physical survival.
B.U.C(k).E.T. Domains
People with opposing viewpoints are often motivated by similar needs because B.U.C(k).E.T. domains affect all of us in fundamental ways. Even when we strongly disagree, we are often responding to the same core human concerns through different experiences, beliefs, and priorities.
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The B.U.C.(k).E.T. framework helps explain why certain conversations become emotionally charged so quickly. When one of these domains is activated, people can shift into immediate and often unconscious Approach or Avoidance responses. In those moments, nuanced thinking becomes more difficult, and people tend to defend positions rather than explore perspectives.
At first glance, many public debates appear deeply divided and impossible to reconcile. But when we look beneath the surface through the lens of B.U.C.(k).E.T., we often discover unexpected areas of overlap. People who seem to stand on opposite sides are frequently trying to protect or fulfill many of the same underlying needs.
Building bridges with B.U.C(k).E.T.
Immigration Example
Immigration is often presented as one of the most divisive issues in modern society. On one side are people who advocate for stricter borders and tighter immigration policies. On the other are those who support more open immigration systems and expanded protections for immigrants and refugees. Public conversations around the issue can quickly become hostile, with each side viewing the other as either uncaring or dangerous.
However, when viewed through the lens of B.U.C.(k).E.T., a more human picture begins to emerge.
For many people who support stricter immigration policies, the issue is deeply connected to the domains of Control, Understanding, and Belonging. They may worry about economic stability, public safety, cultural change, or whether systems and institutions can handle rapid population growth. At the core, many are seeking predictability, security, and a sense that the communities they care about will remain stable and protected.
At the same time, many people who support expanded immigration protections are also responding to the very same domains. They may focus on human dignity, opportunity, compassion, and the belief that people fleeing hardship deserve safety and a chance to build a better life. They often want societies to reflect values of inclusion, fairness, and shared humanity. Their responses are rooted in creating safety, belonging, and hope for vulnerable people.
Both groups are frequently motivated by concerns about family, safety, identity, and the future. Both may feel fear about what could be lost. Both may want stable communities where people can thrive. Even though their conclusions and policy preferences differ dramatically, the underlying human needs are often surprisingly similar.
The conflict becomes intensified because each side tends to interpret the other through threat-based assumptions. One side may perceive indifference to security and order, while the other perceives indifference to human suffering and opportunity. Once those B.U.C.(k).E.T. domains are activated, people often stop listening and begin reacting defensively.
But when we shift the conversation away from rigid political positions and toward the underlying human concerns, a different kind of dialogue becomes possible.
Instead of arguing only about policies, people can begin asking questions like:
How do we create both safety and compassion?
How do we help communities feel stable while supporting people in need?
How do we preserve identity and belonging without dehumanizing others?
How do we create systems that feel fair, predictable, and humane?
These conversations are still difficult, but they become more productive because they acknowledge the humanity underneath each perspective.
Even where significant disagreement remains, understanding the B.U.C.(k).E.T. domains driving people’s reactions helps reduce caricatures and hostility. It allows us to recognize that people on opposing sides are often responding to deeply human needs for safety, belonging, understanding, and control — even when they express those needs in very different ways.
By exploring issues through this lens, we begin to see that people with seemingly opposing viewpoints may not be as far apart as they first appear.