Which researchers proposed that androstadienone found in sweat may signal sexual attractiveness?

• A. Keller and Johansson (2005)
• B. Lundstrom and Olsson (2005)
• C. Smith and Jones (2005)
• D. O'Neil and Patel (2005)

Answer: (B)

The main idea here is that chemical signals in sweat can influence social and sexual perception, functioning like a pheromone in humans. Androstadienone, a steroid found in male sweat, was proposed by Lundström and Olsson as a signal that can convey sexual attractiveness. In their work, they showed that when women were exposed to androstadienone, their judgments of male faces and their mood could be altered compared with a neutral control odor. This pattern supports the view that AND might act as a chemical cue signaling sexual relevance, influencing attraction in a non-conscious way. That specific proposal and evidence are attributed to Lundström and Olsson (2005), which is why this option is the best fit.