A US study found that citrus scents (cleaning-related) increased selfless behavior.

The article was dense, filled with vocabulary like "olfactory bulb," "limbic system," and "retro-nasal olfaction." Leo sighed, rubbing his temples. He was stuck on the final section, the notorious "Yes/No/Not Given" questions.

Look for cause-effect language ( because, leads to, consequently ) – these signal persuasive mechanisms.

Based on common versions of this IELTS passage, here are the key findings often tested: Behavioral Impact

| Word | Meaning | |------|---------| | Olfactory | Relating to the sense of smell | | Ambient scent | Background smell in an environment | | Limbic system | Brain area controlling emotion & memory | | Priming | Unconscious activation of associations | | Congruency | Logical consistency / match | | Odor threshold | Minimum concentration detectable |