Cognitive Bias In Code

William Jeffries@williamcodes

Cognitive Ease

1. Adolf Hitler was born in 1891

2. Adolf Hitler was born in 1887

Repeated Experience

Clear Display

Primed Idea

Good Mood

Feels Familiar

Feels True

Feels Good

Feels Effortless

Ease

Familiarity Bias

kadirga

saricik

biwonjni

nansoma

iktitaf

12 if-statements

Availability Bias

Endowment Effect

or ?

Confirmation Bias

Exaggerated Emotional Coherence

Attaching methods to arrays

not controversial

very controversial

No Monkey Patching!Don’t Break for-in!

What biases did I succumb to?

What biases did my reviewer succumb to?

How about your team?

Junior Duty

Senior Burden

• Familiarity Bias

• Availability Bias

• Endowment Effect

• Confirmation Bias

• Halo Effect

William Jeffries@williamcodes