Chapter 04 of 5
You Will Change
Personality isn't set in stone — here's how it shifts through life.
- The Old View
Set like plaster
In 1890 William James wrote that by age 30, character has 'set like plaster' and will never soften again.
- The Evidence
James was wrong
Long-term studies following the same people for decades show personality keeps changing well after 30.
- Maturity
Growing up, literally
On average, people become more conscientious, more agreeable and more emotionally stable as they age.
17 more cards in this chapter
Could you answer this?
What is the 'end of history illusion'?
🎭 What Makes You You?
- 01The Big FiveThe personality model psychologists actually rely on.
- 02Myers-Briggs on TrialWhy the world's most famous personality test is weak science.
- 03Nature and NurtureWhat twins reveal about where personality comes from.
- 04You Will ChangePersonality isn't set in stone — here's how it shifts through life.
- 05Why Horoscopes Feel TrueThe Barnum effect — and why vague descriptions feel personal.