What makes twins so psychologically fascinating, and how does being a twin shape identity, relationships, mental health, and adulthood?

In this episode of Dr Why, Dr Lauryn and Javonne sit down with Sam a medical SLP, South Florida native, and identical twin to unpack the science, psychology, and emotional reality of being a twin.

Together they explore how identical mannerisms develop, why twin bonds often run deeper than typical sibling relationships, what twin studies reveal about personality and genetics, and how over protectiveness, jealousy, and attachment play out as twins grow up.

Sam also opens up about major life transitions, mental health changes, moving out of her parents’ home, starting a full-time job, navigating anxiety, and how therapy reshaped communication in her relationship.

A warm, honest, funny, and deeply insightful conversation about twin hood, adulthood, identity, and connection.

00:24 – Introduction

00:38 – Meet Sam: medical SLP & twin

00:51 – Why twin studies matter in psychology

01:21 – Do they look alike? Appearance vs personality?

03:27 – The twin bond: “We talk 5–6 times a day”

04:32 – Over protectiveness, jealousy & boundaries

05:29 – A rare medical anomaly that shaped their connection

07:52 – Adulthood, moving out & mental health shifts

09:52 – How stress impacted her relationship

11:42 – Therapy breakthroughs & the “I’m flooded” strategy

What You’ll Learn

• What makes twin bonds psychologically unique
• Why twins share mannerisms — even when personality differs
• How over protectiveness and jealousy show up in twin relationships • The science behind twin development and identity
• How major life changes affect mental health
• Why anxiety can return — even on medication
• How therapy can transform communication patterns
• The “I’m flooded” technique and emotional boundaries
• How childhood bonds shape adult attachment styles
• Why transitioning into adulthood feels overwhelming for many

Listen If You’ve Ever Wondered

• “Do twins really have a stronger bond?”
• “Why do twins act so similar even when they look different?”
• “What happens when life transitions trigger anxiety again?”
• “How do couples communicate better under stress?”
• “Does therapy help even if nothing is ‘wrong’?”
• “Why do some siblings talk every day while others don’t?”

Resources

Website: youngmindspsych.com

Instagram: @youngmindspsych | @dr.why_podcast

Podcast: Dr Why Podcast on all major platforms

YouTube: Dr Why Podcast

TikTok: @youngminds_psych | @dr.whypodcast

Join the Conversation

Do you think twin bonds are naturally stronger or does the relationship depend on how twins grow up?

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