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The Paradox of Egoism, Altruism, and Human Motivation

Philosophy, Biology, Psychology, and Neuroscience

Slide 1 – Title

The Paradox of Egoism

Is Every Human Action Self-Interested?

Topics Covered

Psychological Egoism

Ethical Egoism

Altruism

Evolutionary Biology

Cognitive Science

Neuroscience

Social Psychology

Slide 2 – Central Question

The Big Question

Why do people help others?

Are humans motivated by:

Self-interest?

Genuine concern for others?

Both?

This debate has existed for over 2,000 years.

Slide 3 – Definitions

Concept

Definition

Psychological Egoism

Every action is ultimately motivated by self-interest.

Ethical Egoism

People should act in their own self-interest.

Psychological Altruism

People can genuinely care about others for their own sake.

Evolutionary Altruism

Behavior that benefits others while reducing the actor's biological fitness.

Slide 4 – The Paradox of Egoism

Henry Sidgwick's Paradox

The paradox argues:

People often become happier when they stop chasing happiness.

Likewise:

People often benefit themselves more when they stop focusing entirely on themselves.

Example:

Jones only cares about himself.

↓

People avoid him.

↓

He loses friendships.

↓

He becomes lonely.

↓

His own happiness decreases.

Key Point

Self-interest can sometimes defeat itself.

Slide 5 – Objections to the Paradox

Supporters of Psychological Egoism argue:

The paradox doesn't prove egoism is false.

It only shows egoists may become unhappy.

Psychological egoism is descriptive—not moral.

In other words:

It explains how people act, not how they should act.

Slide 6 – Arguments Supporting Psychological Egoism

1. Desire-Satisfaction Argument

Every action fulfills a desire.

Example:

“I helped because I wanted to.”

Therefore,

Helping fulfilled my desire.

2. Feel-Good Argument

Helping produces:

Pride

Relief

Happiness

Reduced guilt

Therefore,

Helping appears self-interested.

Slide 7 – Criticisms

Joseph Butler

Helping someone is the goal.

Feeling good comes afterward.

Good feelings are:

Result

not

Motivation

Falsifiability Problem

Critics argue:

If every action is labeled selfish,

then nothing could ever prove egoism wrong.

A theory that cannot be disproven becomes difficult to test scientifically.

Slide 8 – Evolutionary vs Psychological Altruism

Evolutionary

Psychological

Focuses on survival and reproduction

Focuses on motives

Studies behavior

Studies intentions

Doesn't explain why someone wanted to help

Explains mental motivation

Helping behavior alone cannot tell us what someone truly intended.

Slide 9 – Richard Dawkins and Selfish Genes

Richard Dawkins argued:

Genes behave as if they are selfish.

However,

This does not mean

people are selfish.

Genes explain

the origin

of many traits,

not necessarily

our conscious motivations.

Slide 10 – Sober & Wilson's Evolutionary Argument

Elliott Sober and David Sloan Wilson argued:

Natural selection probably produced

both:

self-interested motives

altruistic motives

rather than only selfish motives.

Their reasoning

A parent who directly wants

their child to survive

is more reliable

than one who helps only because

it creates personal pleasure.

Slide 11 – The Two Models

Egoistic Model

Ultimate Desire

↓

Pleasure

↓

Belief helping creates pleasure

↓

Helping behavior

Altruistic Model

Ultimate Desire

↓

Help another person

↓

Helping behavior

Conclusion

The altruistic pathway has

fewer psychological steps,

making it potentially

more reliable.

Slide 12 – Behaviorism

Behaviorists such as B. F. Skinner proposed:

Primary drives:

Hunger

Thirst

Sleep

Sex

↓

Everything else

is learned through reinforcement.

Later research challenged this view.

Slide 13 – Neuroscience

Early research suggested

the brain's reward center

equals

the pleasure center.

Later neuroscience found

they are different.

Wanting

≠

Liking

A person can strongly want something

without necessarily enjoying it.

Slide 14 – Social Psychology

C. Daniel Batson developed

the Empathy-Altruism Hypothesis

High empathy

↓

Greater helping

↓

Motivation may genuinely be

to relieve another person's suffering

rather than personal gain.

Slide 15 – Empathy Experiments

Researchers manipulated:

Opportunity to help

Cost of helping

Ability to escape

Emotional closeness

Then measured

whether participants still helped.

Many findings support

at least some genuinely altruistic motives.

Slide 16 – Timeline

1651

Hobbes

Self-interest emphasized

│

1726

Butler

Critique of egoism

│

1751

Hume

Supports altruistic motives

│

1781

Bentham

Psychological hedonism

│

1874

Sidgwick

Paradox of Hedonism

│

1976

Dawkins

Selfish Gene

│

1991

Batson

Empathy-Altruism

│

1998

Sober & Wilson

Evolutionary critique

│

2007

Warneken & Tomasello

Helping in infants

│

Today

Mixed evidence

Pluralistic motivation

Slide 17 – Comparison Chart

Theory

Main Claim

Evidence

Weakness

Psychological Egoism

All actions are selfish

Desire satisfaction

Difficult to falsify

Ethical Egoism

People should pursue self-interest

Moral philosophy

Conflicts between interests

Psychological Altruism

Genuine concern exists

Empathy research

Motives are difficult to measure

Evolutionary Altruism

Helping evolved biologically

Evolutionary biology

Doesn't explain conscious motives

Slide 18 – Strengths & Weaknesses

Psychological Egoism

Strengths

Explains many everyday choices.

Fits some reward-based behavior.

Supported by some learning theories.

Weaknesses

Difficult to test.

Doesn't explain infant helping well.

Empathy research challenges it.

Altruism

Strengths

Supported by empathy experiments.

Explains sacrifice.

Supported by developmental psychology.

Weaknesses

Internal motives remain difficult to observe.

Some helping still includes personal rewards.

Slide 19 – Overall Summary

Modern research suggests:

✔ Humans are capable of self-interest.

✔ Humans are capable of empathy.

✔ Motivation is likely pluralistic.

Rather than:

“Everything is selfish”

or

“Everything is selfless.”

Most psychologists and philosophers conclude

human motivation is a mixture of both.

Slide 20 – Final Conclusion

The evidence from philosophy, biology, psychology, and neuroscience does not support the claim that all human actions are purely selfish or purely selfless. Instead, it points toward a more nuanced view in which people can act from multiple motives depending on the situation. Self-interest and concern for others often coexist, making human motivation complex rather than reducible to a single principle.