🌟 Main Idea: How can a biological factor, like serotonin, influence prosocial behavior? Does it affect our free will? Let's dive in!

• Goal: Understand serotonin's role in prosocial behavior.

• Subjects: 30 healthy peeps! (Avg age: 26)

• Design Type: Repeated measures.

The SSRI Condition: Participants gulped down some citalopram.

• 🧠 Citalopram is an SSRI (Selective Serotonin Reuptake Inhibitor). In simple words, it's like a bodyguard that stops serotonin from leaving the party early, making sure the fun lasts longer!

The Placebo Condition: Participants had a harmless fake drug.

Fun fact: The experiment was double-blind and counter-balanced! (This means neither the participants nor the researchers knew who took what, and the order of taking the drug or placebo was switched for different participants.)

After sipping on their drink (SSRI or placebo), participants had to solve moral dilemmas.

• Scenario 1: Would you push a dude off a bridge to stop a train from hitting 5 people? (That's the personal harm!)
• Scenario 2: Would you hit a lever that changes the train's path, causing it to hit one person instead of five? (The impersonal harm!)