How to Make Better Decisions: Neuroscience of Attention, Valuation, and Social Behavior
Summary
Dr. Michael Platt, neuroscientist at the University of Pennsylvania, discusses how the brain allocates attention, makes decisions, and assigns value to people and objects — much of it operating below conscious awareness. Drawing on decades of primate research, he explains how ancient neural circuits shared with other Old World primates like macaque monkeys govern everything from focus and foraging to social relationships and hormonal signaling. The conversation reveals practical ways to improve attention, decision-making, and social awareness by understanding the brain’s underlying architecture.
Key Takeaways
- Attention follows foraging rules: The brain allocates attention like an animal foraging for food — you abandon a resource (a task, a website, a conversation) when the return rate falls below the environmental average. This is mathematically predictable.
- Rich environments destroy focus: High-speed internet, multiple devices, and social media create an “orchard” effect — your brain is optimized to jump between abundant resources rather than stay focused.
- Your phone doesn’t need to be on — it just needs to be out of the room: Research shows working memory improves significantly only when a phone is in a completely separate room, not just turned face-down or in a bag nearby.
- Visual aperture primes cognitive aperture: Looking at a small, tight focal point before cognitive work narrows attention; looking at dispersed or panoramic visual scenes broadens creative and exploratory thinking.
- Neurons multiplex: Individual neurons in both prefrontal and temporal cortex simultaneously encode multiple variables — who is present, what behavior is occurring, and social context — challenging the “one neuron, one function” model.
- The brain keeps a social ledger: Monkeys (and likely humans) maintain precise mental accounts of reciprocal investment in relationships — grooming time, texts, favors — and this is actively tracked in neural circuits.
- Attention-to-focus ratio is a trainable dial: People exist on a spectrum from hyperfocused to hyper-exploratory. The dial can be shifted somewhat through environment design, behavioral practices, and targeted support.
- Entrepreneurs disproportionately show attention dysregulation: Rates of ADHD-like traits among entrepreneurs are 2–4x the general population, often co-occurring with anxiety and bipolar tendencies — traits linked to creativity and innovation.
- Behavioral tools can substitute for pharmacology: Changing your environment (removing devices, adjusting visual input, narrowing your visual field) produces neurochemical shifts comparable to pharmacologic interventions.
Detailed Notes
The Primate Brain: More Monkey Than We Think
- Humans are Old World primates sharing neural circuits, behavioral patterns, and social dynamics with species like rhesus macaques.
- For nearly every behavioral, cognitive, and emotional phenomenon studied in the lab, human and monkey outputs are nearly indistinguishable when behavior is anonymized.
- A better metaphor than “supercomputer on a monkey brain” is a 30-million-year-old Swiss Army knife — specialized tools evolved for specific problems, shared across primate species.
- Human advantages (language, culture, larger cortex) represent degree, not kind — the same underlying tools are present in other Old World primates.
How Attention Works
- Attention is a prioritization and amplification system — a solution to the problem of not being able to process everything simultaneously.
- What captures attention is determined by two things:
- Evolutionary priming: fast movement, loud sounds, bright stimuli, and especially other people’s faces
- Developmental experience: what you were exposed to while growing up
- Faces are among the most powerful attentional magnets for Old World primates; emotionally aroused faces (fear, anger, excitement) are even more salient.
- People with autism spectrum disorder or schizophrenia show altered social attentional prioritization — faces do not recruit the same level of automatic attention.
The Foraging Model of Attention
- Attention operates according to the Marginal Value Theorem (Charnov, 1976): you leave a resource when the return rate falls below the environmental average.
- This applies equally to:
- Food patches
- Social interactions
- Websites and social media feeds
- Books, podcasts, conversations
- Environmental richness determines switching speed: In a poor environment (one option, slow loading), you exploit thoroughly. In a rich environment (many options, fast access), you switch rapidly.
- Historical shift: Dial-up internet = depleted foraging environment → deep reading, thorough engagement. High-speed internet with 12 open tabs = orchard environment → constant switching.
- The phone-in-the-room effect is consistent with foraging: even without actively using it, the brain includes the phone as a potential resource patch and allocates background computation toward it.
Practical Protocols for Better Focus
Environment-Based Interventions
- Remove devices from the room — not just silence or face-down; physically separate location required for working memory improvement.
- Switch phone to monochrome/grayscale — reduces reward value of the screen, decreasing checking frequency.
- Narrow your visual field before focused work — stare at a small fixation point or close-up object before beginning a cognitively demanding task. This primes a narrow attentional aperture.
- Panoramic/horizon viewing for creative or exploratory thinking — open visual fields are associated with decreased autonomic arousal and broader cognitive exploration.
Cognitive Warm-Up
- There is a warm-up period for cognitive work analogous to physical warm-up. Expecting immediate peak focus is unrealistic.
- Practice described by Huberman: lying still with eyes closed, maintaining an internal monologue in complete sentences without drifting — takes ~10 minutes to stabilize. Functions as a “rich but isolated” foraging environment, keeping attention on a single internal patch.
- Loving-kindness meditation and thematically anchored meditation practices may serve a similar focusing function.
The Exploratory Priming Effect
- Preceding a cognitive task with dispersed foraging (collecting widely spread targets on a screen) increases creative exploration in a subsequent task.
- Preceding a cognitive task with clustered, focused foraging increases focused, exploitation-type thinking.
- Practical implication: the task you do immediately before focused work primes your attentional aperture.
The Attention Spectrum and Individual Differences
- People fall on a continuum from hyperfocused (OCD-adjacent) to hyper-exploratory (ADHD-adjacent).
- This spectrum is influenced by:
- Genetics
- Age (generally moves toward more focus with age)
- Environment and practice
- The dial has a set point that can be shifted modestly — a person set at 3 can perhaps reach 5; a person at 7 may reach 9.
- Entrepreneurs show 2–4x higher rates of attention dysregulation, co-occurring with anxiety, bipolar traits, and elevated creativity/innovation.
- Neuroscience-based behavioral games (e.g., berry foraging tasks, mimic soccer) can objectively measure where someone falls on the attention and social cognition spectrum — more predictive of job performance than personality tests like Myers-Briggs.
Theory of Mind and Social Attention
- Theory of mind — the ability to infer what another person knows, sees, wants, and intends — likely develops through gaze following in infancy, which develops into joint attention, which develops into full theory of mind.
- Old World primates including macaques demonstrate covert attention: pointing gaze at one target while attending to another — adaptive for navigating complex social hierarchies.
- Two “spotlights” of attention can be merged, split between external targets, or directed inward — though maintaining more than two simultaneous attentional foci is very difficult.
Social Relationships and the Neural Ledger
- Monkeys maintain precise reciprocal accounts of grooming investment — tracked over minutes to weeks — and restore balance with high accuracy.
- This mental ledger is encoded across a distributed network including both prefrontal cortex and temporal visual areas.
- Humans show analogous behavior in text/communication reciprocity — the emotional experience of being “owed” a response reflects the same neural accounting.
- In a landmark paper (Nature, ~2024), Platt’s lab recorded wirelessly from thousands of neurons while monkeys engaged in 27–28 natural behaviors in a