The Science of Talking: Boost Your Mood, Sharpen Your Mind, and Protect Against Dementia | Maryellen MacDonald

Apr 13, 2026 Episode Page ↗
Overview

Cognitive scientist Maryellen MacDonald, Donald P. Hayes Professor (emerit) of Psychology and Language Sciences, discusses how harnessing talking—including self-talk and writing—can prevent distraction, depression, dysregulation, and dementia, while also improving learning, emotion regulation, and decision-making.

At a Glance
12 Insights
57m 37s Duration

Deep Dive Analysis

1. Explain to Deepen Learning

Explaining new information to others or yourself clarifies thoughts and solidifies learning, as the act of talking helps encode it into long-term memory, moving beyond mere understanding.

2. Journal for Emotional Processing

Engage in journaling or expressive writing, especially about emotionally bothersome events for 20-30 minutes for a few days, to clarify amorphous feelings, improve mental and physical health, and foster calm and acceptance.

3. Precisely Name Emotions

Move beyond vague terms like ‘upset’ to specific emotions (e.g., afraid, angry, disappointed) to quiet the brain’s limbic system, enabling more rational thought and better emotional regulation.

4. Utilize Self-Talk for Goals

Deliberately talk to yourself (internally or aloud) about tasks and long-term goals to focus attention, clarify strategy, and significantly increase the likelihood of follow-through and perseverance.

5. Prioritize Conversation for Brain Health

Actively engage in frequent, back-and-forth conversations with others to build resilience against cognitive decline and dementia, as this social interaction is more impactful than brain games.

6. Practice High-Stakes Conversations

Rehearse what you intend to say for important discussions, like job interviews or difficult personal conversations, to clarify your message and better prepare for potential reactions.

7. Avoid Finishing Others’ Sentences

Resist the urge to complete someone else’s sentences, as it is impolite and denies them the cognitive benefits and clarity that come from articulating their own thoughts.

8. Create To-Do Lists for Focus

Write down tasks, even simple ones like a grocery list, because the act of writing focuses your attention on your goals and improves memory for those items, even if the list is later lost.

9. Talk to Find Lost Objects

When searching for something, say its name aloud (e.g., ‘keys’) to help bring up a clear mental image of the target, which can aid in finding it faster.

10. Encourage Children’s Own Talking

Prioritize situations where children are encouraged to talk themselves, as their own verbal output is crucial for cognitive development, school readiness, and language acquisition, more so than just listening or watching screens.

11. Embrace Evolving Language Norms

Be open to and adopt new terminology, pronouns, and slang, as language naturally changes, and adapting to these shifts can stimulate your brain and reduce unnecessary frustration.

12. Be Aware of Digital Speech Analysis

Understand that companies and governments analyze patterns in your digital speech (social media posts, recorded calls) to predict behavior and internal states, raising significant privacy concerns that individuals should be aware of.