Uploaded March 2026 | Updated September 2026, 3 weeks ago
Why does the mind seem to divide into different “parts”?
Neuroscientist Marc Lewis explains why many modern therapies — including Internal Family Systems — view the mind as a collection of interacting parts.
But according to Lewis, these parts aren’t fixed structures in the brain. Instead, they emerge in real time, shaped by our development, experiences, and the situations we find ourselves in.
Over time, certain patterns of thoughts, emotions, and behaviours become organised into familiar inner voices — like the inner critic, the part that seeks escape, or the part that feels shame or fear.
Understanding how these parts form and interact could help explain why certain habits, struggles, and emotional patterns keep showing up in our lives.
Do you notice different “parts” of yourself showing up in different situations?
Catch the full episode when it goes live on our YouTube channel—subscribe now so you don’t miss it: youtube.com/theweekenduniversity
#InternalFamilySystems
Credits: Professor Marc Lewis
Why does the mind seem to divide into different “parts”?
Neuroscientist Marc Lewis explains why many modern therapies — including Internal Family Systems — view the mind as a collection of interacting parts.
But according to Lewis, these parts aren’t fixed structures in the brain. Instead, they emerge in real time, shaped by our development, experiences, and the situations we find ourselves in.
Over time, certain patterns of thoughts, emotions, and behaviours become organised into familiar inner voices — like the inner critic, the part that seeks escape, or the part that feels shame or fear.
Understanding how these parts form and interact could help explain why certain habits, struggles, and emotional patterns keep showing up in our lives.
Do you notice different “parts” of yourself showing up in different situations?
Catch the full episode when it goes live on our YouTube channel—subscribe now so you don’t miss it: youtube.com/theweekenduniversity
#InternalFamilySystems
Credits: Professor Marc Lewis
