Trump After the 2024 Election: A Neuropsychological Examination of a President Losing Control

Trump After the 2024 Election: A Neuropsychological Examination of a President Losing Control

The Change Since the Election Is the Story

Something important has changed in Donald Trump since the 2024 presidential election. The issue is not whether Trump has always been narcissistic, impulsive, combative, thin-skinned, grandiose, or unusually dependent upon admiration. Those characteristics have been visible for decades. Nor is there much value in comparing the 80-year-old president with the businessman who appeared on American television thirty years ago. The clinically more interesting comparison is much closer in time: Donald Trump during the 2024 presidential campaign compared with Donald Trump in the summer of 2026.

That comparison reveals a troubling pattern. Since returning to the White House, Trump appears increasingly disinhibited, digressive, emotionally reactive, preoccupied with personal grandeur and legacy, intolerant of contradiction, dependent upon personal loyalty, and erratic in major foreign-policy decisions. His public speech increasingly wanders away from its original subject. His reactions to criticism are frequently disproportionate to the stimulus that produced them. His distinction between loyalty to himself and loyalty to the United States appears increasingly blurred. His fascination with authoritarian leaders has become intertwined with an increasingly expansive conception of his own power. Meanwhile, the Iran war has produced an extraordinary series of reversals in which declarations of imminent victory, demands for capitulation, negotiations, renewed threats and now economic warfare have followed one another with diminishing strategic coherence.

From a neuropsychological perspective, the significance lies in the convergence of these changes. Personality traits that existed previously appear more intense, less regulated and less effectively inhibited. That is precisely why the comparison with 2024 matters. We are not attempting to discover whether Donald Trump has always been Donald Trump. We are examining whether the mechanisms that previously regulated Donald Trump are functioning as effectively as they did when Americans elected him less than two years ago.

Cognitive Decline Is Not Synonymous With Forgetfulness

The popular conception of cognitive deterioration is remarkably primitive. People expect an impaired individual to forget his children's names, become lost in familiar surroundings or fail to remember what happened yesterday. Neuropsychology is considerably more complicated. Human cognition includes attention, inhibition, judgment, cognitive flexibility, planning, self-monitoring, emotional regulation, abstraction, working memory, organization of thought and the ability to distinguish important information from irrelevant information.

These executive functions depend heavily upon frontal and frontal-subcortical systems. They permit an adult to create distance between impulse and action. They allow a person to become angry without immediately retaliating, to experience an inappropriate thought without expressing it, to recognize that an emotional reaction is disproportionate, to abandon an ineffective strategy, to organize complicated information according to importance, and to consider long-term consequences rather than immediate gratification.

For a president, these functions are not academic abstractions. They constitute much of the machinery of competent government. A president must listen to information he dislikes, tolerate disagreement from advisers, distinguish personal humiliation from national interest, suppress retaliatory impulses, evaluate contradictory intelligence, change strategy when evidence demands it, and maintain a coherent hierarchy of priorities while simultaneously confronting dozens of competing problems.

The behavioral changes visible in Trump increasingly involve precisely these functions.

His Speech Is Becoming More Revealing

Trump has always spoken associatively rather than linearly, frequently departing from prepared remarks to tell stories, attack opponents or repeat grievances. What is increasingly striking is the degree to which the destination of his speech can disappear altogether. A subject begins in one place and migrates through a series of associations, complaints, memories, exaggerations and personal observations before occasionally returning to its original point.

This matters because coherent discourse is itself an executive activity. A speaker must retain the objective of the discussion in working memory, suppress irrelevant associations, monitor what has already been said, recognize repetition, evaluate the listener's response and continuously distinguish relevant material from irrelevant material. Increasing verbosity therefore does not necessarily indicate increasing cognitive richness. Sometimes the opposite occurs: more words are required because the executive system is becoming less efficient at organizing thought.

The extraordinarily long Cabinet meeting at the end of 2025 attracted attention partly because Trump appeared fatigued and at times closed his eyes. The more important feature was the broader organization of the event. A Cabinet meeting is an executive instrument. Its purpose is to identify problems, receive information, make decisions and coordinate government. When executive communication increasingly becomes an extended vehicle for personal grievance, reminiscence and unrelated material, the question is no longer simply whether the president talks too much. The question becomes whether his capacity to organize thought according to relevance is changing.

The Ballroom, the Helipad and a Disturbing Failure of Proportionality

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